MWESIGWA, Ronald; SARVATE, Dinesh G.; ZHANG, Li. Group divisible designs of four groups and block size five with configuration (1; 1; 1; 2). Journal of Algebra Combinatorics Discrete Structures and Applications, [S. l.], v. 3, n. 3, p. 187–194, 2016. Disponível em: https://jacodesmath.com/index.php/jacodesmath/article/view/47. Acesso em: 12 sep. 2026.