Note: The references are not ordered alphabetically!

900 A. Raychaudhuri
On powers of strongly chordal and circular arc graphs
Ars Combinatoria 34 1992 147--160
ZMath 0770.05066
901 B. Reed
A semi--strong perfect graph theorem
Ph. D. Thesis, McGill University, Qu\'ebec, 1986
ZMath 0647.05052
902 B. Reed
A semi--strong perfect graph theorem
J. Comb. Theory $(B)$ 43 1987 223--240
ZMath 0647.05052
903 B. Reed, N. Sbihi
Recognizing bull--free perfect graphs
Graphs and Combinatorics 11 1995 171--178
ZMath 0832.05039
904 J.H. Reif
Polynomial time recognition of grahs of fixed genus
unpublished manuscript
905 J. Reiterman, V. R\"odl, E. \v{S}inajov\'a
Geometrical embeddings of graphs
Discrete Math. 74 1989 291--319
ZMath 0684.05018
906 P.L. Renz
Intersection representation of graphs by arcs
Pacific J. Math. 34 1970 501--510
ZMath 0191.55103
907 J. Riordan, C.E. Shannon
The number of two--terminal series--parallel networks
J. Math. and Physics 21 83 1942
908 F.S. Roberts
Indifference graphs
{\sl Proof Techniques in Graph Theory},{\sc F.Harary}, ed.,Academic Press, New York 1969 139--146
ZMath 0193.24205
909 F.S. Roberts
On the boxicity and cubicity of a graph
Recent Progress in Combinatorics, W.T. Tutte, ed., Academic Press, New York 1969 301--310
ZMath 0193.24301
910 F.S. Roberts, J.H. Spencer
A characterization of clique graphs
J. Comb. Theory $(B)$ 10 1971 102--108
ZMath 0215.05801
911 N. Robertson, P.D. Seymour
Graph minors. I. Excluding a forest
J. Comb. Theory $(B)$ 35 1983 39--61
ZMath 0521.05062
912 N. Robertson, P.D. Seymour
Graph minors. III. Planar tree--width
J. Comb. Theory $(B)$ 36 1984 49--64
ZMath 0548.05025
913 N. Robertson, P.D. Seymour
Graph width and well--quasi ordering: a survey
{\sl Progress in Graph Theory},{\sc J. Bondy, U. Murty}, eds.,Academic Press, New York 1984 399--406
ZMath 0566.05052
914 N. Robertson, P.D. Seymour
Graph minors -- a survey
{\sl Surveys in Combinatorics},{\sc I. Anderson}, ed.,Cambridge University Press 1985 153--171
ZMath 0568.05025
915 N. Robertson, P.D. Seymour
Graph minors. II. Algorithmic aspects of tree width
J. Algorithms 7 1986 309--322
ZMath 0611.05017
916 N. Robertson, P.D. Seymour
Graph minors. V. Excluding a planar graph
J. Comb. Theory $(B)$ 41 1986 92--114
ZMath 0598.05055
917 N. Robertson, P.D. Seymour
Graph minors. VI. Disjoint paths across a disc
J. Comb. Theory $(B)$ 41 1986 115--138
ZMath 0598.05042
918 N. Robertson, P.D. Seymour
Graph minors. VII. Disjoint paths on a surface
J. Comb. Theory $(B)$ 45 1988 212--254
ZMath 0658.05044
919 N. Robertson, P.D. Seymour
Graph minors. IV. Tree--width and well--quasi--ordering
J. Comb. Theory $(B)$ 48 1990 227--254
ZMath 0719.05032
920 N. Robertson, P.D. Seymour
Graph minors. IX. Disjoint crossed paths
J. Comb. Theory $(B)$ 49 1990 40--77
ZMath 0741.05044
921 N. Robertson, P.D. Seymour
Graph minors. VIII. A Kuratowski theorem for general surfaces
J. Comb. Theory $(B)$ 48 1990 255--288
ZMath 0719.05033
922 N. Robertson, P.D. Seymour
Graph minors. X. Obstructions to tree--decomposition
J. Comb. Theory $(B)$ 52 1991 153--190
ZMath 0764.05069
923 N. Robertson, P.D. Seymour
Graph minors. XI: Circuits on a surface.
J. Comb. Theory, Ser. B 60, No.1, 72-106 (1994). [ISSN 0095-8956]
ZMath 0799.05016
924 N. Robertson, P.D. Seymour
Graph minors XIII. The disjoint paths problem
J. Comb. Theory $(B)$ 63 1995 65--110
ZMath 0823.05038
925 N. Robertson, P.D. Seymour
Graph minors. XIV. Extending an embedding
J. Comb. Theory $(B)$ 65 1995 23--50
ZMath 0840.05017
926 N. Robertson, P.D. Seymour
Graph minors. XV. Giant steps
J. Comb. Theory $(B)$ 68 1996 112--148
ZMath 0860.05023
927 N. Robertson, P.D. Seymour
Graph minors. XIV. Taming a vertex
manuscript 1987
ZMath 1027.05088
928 N. Robertson, P.D. Seymour
Graph minors. XVI. Excluding a non--planar graph
manuscript 1991 %?????? 0
ZMath 1023.05040
929 D.J. Rose
Triangulated graphs and the elimination process
J. Math. Analys. Appl. 32 1970 597--609
ZMath 0216.02602
930 D.J. Rose
On simple characterizations of $k$--trees
Discrete Math. 7 1974 317--322
ZMath 0285.05128
931 D.J. Rose, R.E. Tarjan, G.S. Lueker
Algorithmic aspects of vertex elimination on graph
SIAM J. Computing 5 1976 266--283
ZMath 0353.65019
932 A. Rosenberg
Interval hypergraphs
{\sl Contemporary Math.}89 1989 27--44
ZMath 0682.68059
933 I.C. Ross, F. Harary
The square of a tree
{\sl Bell System Tech. J.}39 1960 641--647
934 D. Rotem, J. Urrutia
Circular permutation graphs
% {\sl Res. Rep. Univ. Waterloo} 0
ZMath 0508.05060
935 F. Roussel, I. Rusu
An ${\cal O}(m^2+mn)$ algorithm to recognize Meyniel graphs
ODSA'97 workshop, Rostock, September 1997 0
936 N.D. Roussopoulos
A ${\cal O}(\max\{m,n\}) algorithm for determining the graph H from its line graph $G$
Inf. Proc. Letters 2 1973 108--112
ZMath 0274.05116
937 I. Rusu
A new class of perfect Ho\`ang graphs
Discrete Math. 145 1995 279--285
ZMath 0833.05033
938 I. Rusu
Quasi--parity and perfect graphs
Inf. Proc. Letters 54 1995 35--39
ZMath 0875.68686
939 I. Rusu
Building counter examples
Discrete Math. 171 1997 213--227
ZMath 0874.05024
940 H.J. Ryser
Combinatorial configurations
SIAM J. Appl. Math. 17 1969 593--602
ZMath 0186.01901
941 G. Sabidussi
The composition of graphs
Duke Math. J. 26 1959 693--696
ZMath 0095.37802
942 G. Sabidussi
Graph multiplication
Math. Zeitschr. 72 1960 446--457
ZMath 0093.37603
943 G. Sabidussi
Graph derivatives
Math. Zeitschr. 76 1961 385--401
ZMath 0109.16404
944 H. Sachs
On the Berge conjecture concerning perfect graphs
{\sl Combin. Structure and their Applic.},Gordon and Breach, New York 1970 377--384
ZMath 0247.05116
945 H. Sachs
Coin graphs, polyhedra and conformal mapping
Discrete Math. 134 1994 133--138
ZMath 0808.05043
946 A. Sassano
Chair--free Berge graphs are perfect
% Tech. Report 10.95 {\sl Universit\`a di Roma} , 1995 \GrCom 13
ZMath 0891.05054
947 N. Sbihi
Algorithme de recherche d'un stable de cardinalit\'e maximum dans un graphe sans \'etoile
Discrete Math. 29 1980 53--76
ZMath 0444.05049
948 A. A. Sch\"affer
Recognizing brittle graphs: remarks on a paper of Ho\`ang and Khouzam
Discrete Appl. Math. 31 1991 29--35
ZMath 0737.05071
949 A.A. Sch\"affer
A faster algorithm to recognize undirected path graphs
Discrete Appl. Math. 43 1993 261--295
ZMath 0770.68096
950 P. Scheffler
The graphs of tree--width $k$ are exactly the partial $k$--trees
manuscript 1986
951 P. Scheffler
Linear--time algorithms for \NP--complete problems restricted to partial $k$--trees
Tech. Report R-MATH-03/87 IMATH Berlin 1987
ZMath 0629.68043
952 P. Scheffler
Die Baumweite von Graphen als ein Ma\ss{} f\"ur die Kompliziertheit algorithmischer Probleme
Dissertation Thesis, {\sl Akad. d. Wiss. Berlin, Report R-MATH-04/89} 1989
ZMath 0684.68061
953 P. Scheffler, D. Seese
Graphs of bounded tree--width and linear--time algorithms
manuscript 1986 %????? 0
954 E.R. Scheinerman
Intersection classes and multiple intersection parameters of a graph
Ph. D. Thesis, Princeton University 1984
955 E.R. Scheinerman
Characterizing intersection classes of graphs
Discrete Math. 55 1985 185--193
ZMath 0597.05056
956 E.R. Scheinerman
On the structure of hereditary classes of graphs
J. Graph Theory 10 1986 545--551
ZMath 0609.05057
957 E.R. Scheinerman
A note on planar graphs and circle orders
SIAM J. Discr. Math. 4 1991 447--450
ZMath 0735.05033
958 E.R. Scheinerman
A note on graphs and sphere orders
J. Graph Theory 93/1 0 283--289
ZMath 0781.05016
959 E.R. Scheinerman, A. Trenk
On generalized perfect graphs: bounded degree and bounded edge perfection
Discrete Appl. Math. 44 1993 233--245
ZMath 0790.05028
960 E.R. Scheinerman, J.C. Weirman
On circle containment orders
Order 4 1988 315--318
ZMath 0667.06002
961 E.R. Scheinerman, D.B. West
The interval number of a planar graph: Three intervals suffice
J. Comb. Theory $(B)$ 35 1983 224--239
ZMath 0528.05053
962 W. Schnyder
Planar graphs and poset dimension
Order 5 1989 323--343
ZMath 0675.06001
963 A. Seb\H{o}
Forcing colorations, intervals and the perfect graph conjecture
In: {\sc R. Kannan, E. Balas, G. Cornu\'ejols}, eds., Integer Programmingand Combinatorial Optimization II, Carnegie Mellon University Press,Pittsburgh, 1992 0
964 A. Seb\H{o}
The connectivity of minimal imperfect graphs
J. Graph Theory 23 1996 77--85
ZMath 0859.05058
965 A. Seb\H{o}
On critical edges in minimal imperfect graphs.
J. Comb. Theory $(B)$ 67 1996 62--85
ZMath 0855.05062
966 D. Seese
Tree--partite graphs and the complexity of algorithms
Conf. on Foundat. of Comput. Theory FCT'85,Lecture Notes in Comp. Sci. 199 1985 412--421
ZMath 0574.68036
967 D. Seese
Tree--partite graphs and the complexity of algorithms
Tech. Report {\sl Akad. d. Wiss. R-MATH-8/86 Berlin} 1986
ZMath 0574.68036
968 D. Seinsche
On a property of the class of $n$--colorable graphs
J. Comb. Theory $(B)$ 16 1974 191--193
ZMath 0269.05103
969 P.D. Seymour
Decomposition of regular matroids
J. Comb. Theory $(B)$ 28 1980 305--359
ZMath 0443.05027
970 F.B. Shepherd
Near--perfect matrices
Math. Programming 64 1994 295--323
ZMath 0804.05036
971 T. Shermer
Recent results in art galleries
{\sl Proceedings of the IEEE} 80 1992
972 L.N. Shevrin, N.D. Filippov
Partially ordered sets and their comparability graphs
Siber. Math. J. 11 1970 497--509
ZMath 0214.23303
973 Y. Shibata
On the tree representation of chordal graphs
J. Graph Theory 12 1988 421--428
ZMath 0654.05022
974 Y. Shibata, A. Ishijima
On the minimum tree representation of chordal graphs
{\sl The Transact. of the IEICE, Vol. E 71, No. 3} 1988 203--204
975 D.R. Shier
Some aspects of perfect elimination orderings in chordal graphs
Discrete Appl. Math. 7 1984 325--331
ZMath 0537.05069
976 S. Shinoda, Y. Kajitani, K. Onaga, W. Mayeda
Various characterization of series--parallel graphs
Proceedings 1979 ISCHS 1979 100--103
977 R.W. Shirey
Implementation and analysis of efficient graph planarity testing algorithms
Ph. D. Thesis, {\sl Univ. of Wisconsin} 1969
978 G. Sierksma, H. Hoogeveen
Seven criteria for integer sequences being graphic
J. Graph Theory 15 1991 223--231
ZMath 0752.05052
979 F.W. Sinden
Topology of thin film RC--circuits
{\sl Bell System Tech. J.} 1966 1639--1662
ZMath 0189.24003
980 D.J. Skrien
A relationship between triangulated graphs, comparability graphs, proper interval graphs, proper circular-arc graphs, and nested interval graphs.
J. Graph Theory 6, 309-316 (1982). [ISSN 0364-9024]
ZMath 0495.05027
981 D.J. Skrien, J. Gimbel
Homogeneously representable interval graphs
Discrete Math. 55 1985 213--216
ZMath 0579.05054
982 P.J. Slater
A characterization of soft hypergraphs
Canad. Math. Bull. 21 1978 335--337
ZMath 0391.05042
983 V.P. Soltan
$d$--convexity in graphs
Soviet Math. Dokl. 28 1983 419--421
ZMath 0553.05060
984 V.P. Soltan
Introduction To The Axiomatic Theory of Convexity (in Russian)
{\sl Stiin\c ta, Chi\c sin\u au} 1984
985 V.P. Soltan, V.D. Chepoi
Conditions for invariance of set diameters under $d$--convexification in a graph
Cybernetics $($the English translation of Kibernetika$)$ 19 1983 750--756
ZMath 0564.05037
986 V.P. Soltan, V.D. Chepoi
$d$--convex sets in chordal graphs
{\sl Math. Research} (Chi\c sin\u au) 78 1984 105--124
987 L. \v{S}olt\'es
Forbidden induced subgraphs for line graphs
Discrete Math. 132 1994 391--394
ZMath 0805.05072
988 S. Sorg
Die $P_4$-Struktur von Kantengraphen bipartiter Graphen
{\it Diploma thesis}, Mathematisches Institut der Universit\"at zu K\"oln . 1997
989 J.P. Spinrad
Two--Dimensional Partial Orders
Ph. D. Thesis, {\sl Dept. of EECS, Princeton University, N.J.} 1982
990 J.P. Spinrad
On comparability and permutation graphs
SIAM J. Computing 14 1985 658--670
ZMath 0568.68051
991 J.P. Spinrad
Recognition of circle graphs
J. Algorithms 16 1994 264--282
ZMath 0797.68130
992 J.P. Spinrad
Doubly lexical ordering of dense 0-1 matrices
% {\sl manuscript, Vanderbilt University Nashville, TN} Inf. Proc. Letters 45 (1993) 1988 229--235
ZMath 0771.68068
993 J.P. Spinrad
Circular--arc graphs with clique cover number two
J. Comb. Theory $(B)$ 44 1988 300--306
ZMath 0596.05042
994 J.P. Spinrad
Finding large holes
Inf. Proc. Letters 39 1991 227--229
ZMath 0735.68069
995 J.P. Spinrad
Representations of graphs
book manuscript 1997
996 J.P. Spinrad, A. Brandst\"adt, L.K. Stewart
Bipartite permutation graphs
Discrete Appl. Math. 18 1987 279--292
ZMath 0628.05055
997 J.P. Spinrad, R. Sritharan
Algorithms for weakly triangulated graphs
Discrete Appl. Math. 59 1995 181--191
ZMath 0827.68084
998 N. Srinivasan, J. Opatrny, V.S. Alagar
Bigeodetic graphs
Graphs and Combinatorics 4 1988 379--392
ZMath 0657.05064
999 R. Sritharan
A linear time algorithm to recognize circular permutation graphs
Networks 27 1996 171--174
ZMath 0853.05073