SENTHILKUMAR, M. B. .; THAMBIDURAI, R. A Study on Combinatories in Discrete Mathematics. International Journal on Future Revolution in Computer Science & Communication Engineering, [S. l.], v. 4, n. 7, p. 40–47, 2018. Disponível em: http://www.ijfrcsce.org/index.php/ijfrcsce/article/view/1711. Acesso em: 6 may. 2024.