Refinements of Kantorovich type, Schwarz and Berezin number inequalities. Extracta Mathematicae, [S. l.], v. 35, n. 1, p. 1–20, 2020. DOI: 10.17398/2605-5686.35.1.1. Disponível em: https://revista-em.unex.es/index.php/EM/article/view/2605-5686.35.1.1.. Acesso em: 18 oct. 2024.