RUSEV, P. COMPLETE SYSTEMS OF WEBER - HERMITE FUNCTIONS. Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 82, n. 1, p. 13–24, 1991. Disponível em: https://annual.uni-sofia.bg/index.php/fmi/article/view/519. Acesso em: 13 apr. 2025.