HUAN-NAN SHI; PEI WANG; JIAN ZHANG; WEI-SHIH DU. Notes on judgment criteria of convex functions of several variables. Results in Nonlinear Analysis, [S. l.], v. 4, n. 4, p. 235–243, 2022. Disponível em: https://nonlinear-analysis.com/index.php/pub/article/view/81. Acesso em: 4 dec. 2024.