- Tamás Szonyi:
Note on the order of magnitude of k for complete k-arcs in PG(2, q). Discret. Math. 66(3): 279-282 (1987) - Ioan Tomescu:
Graphical Eulerian numbers and chromatic generating functions. Discret. Math. 66(3): 315-318 (1987) - Zhe-xian Wan, Rong-hua Xiong:
Existence of self-reverse-dual m-sequences. Discret. Math. 66(3): 283-288 (1987) - Mark E. Watkins, James B. Shearer:
Counterexamples to two conjectures about distance sequences. Discret. Math. 66(3): 289-298 (1987) - Douglas R. Woodall:
An impossibility theorem for electoral systems. Discret. Math. 66(1-2): 209-211 (1987)