Estimation of average length of search on random zero-one matrices. - A. Békéssy (Acta Cybern., 1979)

Contribution to the theory of data base relations. - A. Békéssy; János Demetrovics (Discret. Math., 1979)

On the number of maximal dependencies in a data base relation of fixed order. - A. Békéssy; János Demetrovics; László Hannák; Peter Frankl; Gyula O. H. Katona (Discret. Math., 1980)