DE LA BARRERA A, FERRER O, SANABRIA J. Positive definite kernels on the set of integers, stability, some properties and applications. Stud. Univ. Babeş-Bolyai Math. [Internet]. 2022 Dec. 2 [cited 2025 Feb. 5];67(4):841–854. Available from: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/2638