A Doubt ₭ − Ǫ −Bipolar Fuzzy BCI-Ideals and Doubt ₭ − Ǫ −Bipolar Fuzzy BCI-Implicative Ideals in BCI-Algebra. Journal of Pharmaceutical Negative Results, [S. l.], p. 147–151, 2022. Disponível em: https://www.pnrjournal.com/index.php/home/article/view/440.. Acesso em: 23 jun. 2026.