TINIANSKIJ, N. On conjugate of saddle-convex functions. Lithuanian Mathematical Journal, [S. l.], v. 8, n. 2, p. 351–370, 1968. DOI: 10.15388/LMJ.1968.20222. Disponível em: https://www.journals.vu.lt/LMJ/article/view/20222.. Acesso em: 21 nov. 2024.