The fine structure of threefold triple systems: u = 1 or 3 (mod 6)

Charles J. Colbourn, Rudolf Mathon, Alexander Rosa, Nabil Shalaby. The fine structure of threefold triple systems: u = 1 or 3 (mod 6). Discrete Mathematics, 92(1-3):49-64, 1991. [doi]

Abstract

Abstract is missing.