OSIPOV, V. Aproximate integration and construction of a bounder layer of equation on the Banach’s space. Lithuanian Mathematical Journal, [S. l.], v. 8, n. 3, p. 581–589, 1968. DOI: 10.15388/LMJ.1968.20591. Disponível em: https://www.journals.vu.lt/LMJ/article/view/20591.. Acesso em: 4 may. 2024.