Volume 191, Numbers 1-3, September 1998
: On the clique-transversal number of chordal graphs.
: Minimal 2-connected non-hamiltonian claw-free graphs.
: On configurations and the book of Sainte-Laguë.
: Empty triangles in drawings of the complete graph.
: Sachs triangulations and infinite sequences of regular maps on given type.
: A short solution of Heawood's empire problem in the plane.