Volume 179, Numbers 1-3, January 1998
: Supereulerian graphs, independent sets, and degree-sum conditions.
: A characterization of substitutive sequences using return words.
: The centroidal branches of a separable graph are edge reconstructible.
: On contractible and vertically contractible elements in 3-connected matroids and graphs.
C. J. Bouwkamp
: On step-2 transforms for simple perfect squared squares.
: A bijection on Dyck paths and its consequences.
: On the existence of (k, l)-critical graphs.