N. KUMARAN; K. ARJUNAN; B. ANANTH. Level subsets of bipolar valued fuzzy subhemiring of a hemiring. Malaya Journal of Matematik, India, v. 6, n. 01, p. 230–235, 2018. DOI: 10.26637/MJM0601/0027. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/801. Acesso em: 5 nov. 2024.