DHRUBA DAS. Imprecise vector: Membership Surface and its arithmetic. Malaya Journal of Matematik, India, v. 8, n. 02, p. 674–682, 2020. DOI: 10.26637/MJM0802/0060. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/1480. Acesso em: 16 jul. 2024.