KHACHATRYAN, I. G. INVESTIGATION OF SOME PROBLEMS OF FUNCTIONAL ANALYSIS IN LINEAR SPACES WITH LIMIT OPERATION OF A SEQUENCE. Proceedings of the YSU A: Physical and Mathematical Sciences, Yerevan, Armenia, v. 36, n. 2 (198), p. 3–43, 2002. DOI: 10.46991/PYSUA.2002.36.2.003. Disponível em: https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol36_no2_2002_pp003-043. Acesso em: 22 jan. 2026.