Remark on the Generalized Graph Extension Theorem. - W. Mielants (Eur. J. Comb., 1980)

Minimal balanced sets and finite geometries. - W. Mielants; G. Bruyneel (Discret. Math., 1981)

Dembowski Semi-inversive planes. - M. L. H. Willems; W. Mielants (Eur. J. Comb., 1982)