Volume 91, Number 1, August 1991
Peter Engel:
The enumeration of four-dimensional polytopes.
9-31
Tomasz Luczak:
Size and connectivity of the k-core of a random graph.
61-68
Peter Horák:
Extending partial systems of distinct representatives.
95-98
Volume 91, Number 2, August 1991
A. Clivio:
Tilings of a torus with rectangular boxes.
121-139
Colin Cooper:
Pancyclic Hamilton cycles in random graphs.
141-148
Peter McMullen:
Regular polyhedra related to projective linear groups.
161-170
A. Quilliot:
Une condition pour qu'une famille de triangles soit orientable en un ordre cyclique.
171-182
Yeow Meng Chee:
Graphical t-designs with block sizes three and four.
201-206
Alon Nilli:
On the second eigenvalue of a graph.
207-210
Volume 91, Number 3, September 1990
Tuvi Etzion:
Hamiltonian decomposition of K*n, patterns with distinct differences, and Tuscan squares.
259-276
Michelle L. Wachs:
The major index polynomial for conjugacy classes of permutations.
283-293