PETROSYAN, A. H.; KHACHATRYAN, L. G. ABOUT EXPANSION BY EIGEN FUNCTIONS SELF-ADJOINT DIFFERENTIAL OPERATOR’S WITH COEFFICIENTS HAVING PRECISE BEHAVIOUR IN INFINITY. Proceedings of the YSU A: Physical and Mathematical Sciences, Yerevan, Armenia, v. 38, n. 1 (203), p. 22–27, 2003. DOI: 10.46991/PYSU:A/2004.38.1.022. Disponível em: https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol38_no1_2004_pp022-026. Acesso em: 23 nov. 2024.