JASILIONIS, R. The properties of the equilibrium solutions of one class of the complex problems. Lithuanian Mathematical Journal, [S. l.], v. 8, n. 1, p. 179–184, 1968. DOI: 10.15388/LMJ.1968.20193. Disponível em: https://journals.vu.lt./LMJ/article/view/20193. Acesso em: 26 apr. 2025.