V. SARAVANAN. A study on intuitionistic $(\lambda, \mu)$ - fuzzy subrings of a ring. Malaya Journal of Matematik, India, v. 7, n. 01, p. 83–90, 2019. DOI: 10.26637/MJM0701/0017. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/680. Acesso em: 5 nov. 2024.