DE LA BARRERA , Arnaldo; FERRER, Osmin; SANABRIA, Jos´e. Positive definite kernels on the set of integers, stability, some properties and applications. Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 67, n. 4, p. 841–854, 2022. DOI: 10.24193/subbmath.2022.4.13. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/2638. Acesso em: 5 feb. 2025.