Combinatorial problems on the existence of large submatrices I. - H. Burkill; L. Mirsky (Discret. Math., 1973)

Combinatorial problems on the existence of large submatrices II. - H. Burkill; L. Mirsky (Discret. Math., 1977)

Monotonic Functions on Partially Ordered Sets. - H. Burkill (J. Comb. Theory A, 1984)