LIMAYE, B.; SHIRALI, S. Korovkin’s Theorem for Positive Functionals on Normed Algebras. The Journal of the Indian Mathematical Society, [S. l.], v. 40, n. 1-4, p. 163–172, 1976. Disponível em: http://informaticsjournals.com/index.php/jims/article/view/16622. Acesso em: 3 may. 2024.