Changing and Unchanging the Diameter of a Hypercube. - Niall Graham; Frank Harary (Discret. Appl. Math., 1992)

Subcube Fault-Tolerance in Hypercubes - Niall Graham; Frank Harary; Marilynn Livingston; Quentin F. Stout (Inf. Comput., 1993)

A Splitting Property of Maximal Antichains. - Rudolf Ahlswede; Péter L. Erdös; Niall Graham (Comb., 1995)