MITRA R.K.; SINHA K.; KAGEYAMA S.; SINGH M.K. Constructions of group divisible and nested group divisible designs. Utilitas Mathematica , [S. l.], v. 61, 2002. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/261. Acesso em: 8 may. 2026.