MARTIN, Paul; MAZORCHUK, Volodymyr. Partitioned Binary Relations. MATHEMATICA SCANDINAVICA, [S. l.], v. 113, n. 1, p. 30–52, 2013. DOI: 10.7146/math.scand.a-15480. Disponível em: https://tidsskrift.dk/math/article/view/15480. Acesso em: 14 aug. 2026.