Circulants and the chromatic index of Steiner triple systems Mariusz Meszka, Roman Nedela, Alexander Rosa (2006) Mathematica Slovaca
Codes, lattices, and Steiner systems. Solé, Patrick (1997) The Electronic Journal of Combinatorics [electronic only]
Compatible factorizations and three-fold triple systems. Ibrahim, Haslinda (2006) Bulletin of the Malaysian Mathematical Sciences Society. Second Series