KARTHIKA, A. PROPERTIES OF INSTUITIONISTIC FUZZY SP-BOUNDARY. Journal of Global Research in Mathematical Archives(JGRMA), [S. l.], v. 1, n. 7, p. 88–96, 2013. Disponível em: https://jgrma.com/index.php/jgrma/article/view/89. Acesso em: 29 apr. 2025.