- D. F. Robinson:
Extending a function on a graph. Discret. Math. 6(1): 89-99 (1973) - Douglas R. Shier:
A decomposition algorithm for optimality problems in tree-structured networks. Discret. Math. 6(2): 175-189 (1973) - David P. Sumner:
Graphs indecomposable with respect to the X-join. Discret. Math. 6(3): 281-298 (1973) - Luc Teirlinck:
On the maximum number of disjoint Steiner triple systems. Discret. Math. 6(3): 299-300 (1973) - Luc Teirlinck:
The existence of reverse Steiner triple systems. Discret. Math. 6(3): 301-302 (1973) - Chak-Kuen Wong, P. C. Yue:
A majorization theorem for the number of distinct outcomes in n independent trials. Discret. Math. 6(4): 391-398 (1973)