Fourth Czechoslovakian Symposium on Combinatorics, Graphs and Complexity

Two Sequences of 2-Regular Graceful Graphs Consisting of 4-gons (J. Abrham, A. Kotzig#). A Survey of Self-Dual Polyhedra (D. Archdeacon). On Magic Labellings of Convex Polytopes (M. Baca). A Packing Problem and Geometrical Series (V. Balint). On the Bananas Surface B2 (R. Bodendiek, K. Wagner). Structural Properties and Colorings of Plane Graphs (O.V. Borodin). The Binding Number of Graphs (M. Borowiecki). Note on Algorithmic Solvability of Trahtenbrot-Zykov Problem (P. Bugata). Cartesian Dimensions of a Graph (G. Burosch, P. V. Ceccherini). The Steiner Minimal Tree Problem in L2p (D. Cieslik). On k -Connected Subgraphs of the Hypercube (T. Dvorak). On Some of My Favourite Problems in Various Branches of Combinatorics (P. Erdos). Realizability of Some Starlike Trees (D. Froncek). The Construction of All Configurations (124, 163) (H. Gropp). (p,q)-realizability of Integer Sequences with Respect to Mobius Strip (M. Hornak). Vertex Location Problems (O. Hudec). On Generation of a Class of Flowgraphs (A.J.C. Hurkens, C.A.J. Hurkens, R.W. Whitty). The Weight of a Graph (J. Ivanco). On the Kauffman Polynomial of Planar Matroids (F. Jaeger). On Symmetry Groups of Selfdual Convex Polyhedra (S. Jendrol). A Remark on 2- (u,kappa,lambda) Designs (V. Jurak). On a New Class of Intersection Graphs (M. Koebe). Asymptotic Normality of Isolated Edges in Random Subgraphs of the n -Cube (U. Konieczna). On Bounds of the Bisection Width of Cubic Graphs (A.V. Kostochka, L.S. Mel'nikov). On Random Cubical Graphs (A.V. Kostochka, A.A. Sapozhenko, K. Weber). On the Computational Complexity of Seidel's Switching (J. Kratochvil, J. Nesetril, O. Zyka). The Harmonious Chromatic Number of a Graph (A. Kundrik). Arboricity and Star Arboricity of Graphs (A. Kurek). Extended 4-Profiles of Hadamard Matrices (C. Lin, W.D. Wallis, Z. Lie). Good Family Packing (M. Loebl, S. Poljak). Solution of an Extremal Problem Concerning Edge-Partitions of Graphs (Z. Lonc). Balanced Extensions of Spare Graphs (T. Luczak, A. Rucinski). Two Results on Antisocial Families of Balls (A. Malnic, B. Mohar). Hamiltonicity of Vertex-transitive pq -Graphs (D. Marusic). On Nodes of Given Out-Degree in Random Trees (A. Meir, J.W. Moon). All Leaves and Excesses are Realizable for k =3 and All lambda (E. Mendelsohn, N. Shalaby, S. Hao). The Binding Number of k -Trees (D. Michalak). An Extension of Brook's Theorem (P. Mihok). On Sectors in a Connected Graph (L. Nebesky). Irreconstructability of Finite Undirected Graphs from Large Subgraphs (V. Nydl). On Inefficient Proofs of Existence and Complexity Classes (C.H. Papadimitriou). Optimal Coteries on a Network (C.H. Papadimitriou, M. Sideri). On Some Heuristics for the Steiner Problem in Graphs (J. Plesnik). Minimax Results and Polynomial Algorithms in VLSI Routing (A. Recski). Critical Perfect Systems of Difference Sets (D.G. Rogers). Some Operations (Not) Preserving the Integer Rounding Property (A.