BILLINGTON, ELIZABETH J.; KÜÇÜKÇIFÇI, SELDA; YAZICI, EMINE ŠULE; LINDNER, CURT. Embedding 4-cycle systems into octagon triple systems. Utilitas Mathematica , [S. l.], v. 79, 2009. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/624. Acesso em: 8 may. 2026.