Bruk V. Generalized Resolvents of Symmetric Relations Generated on Semi-Axis by a Differential Expression and a Nonnegative Operator Function. Журн. мат. фіз. анал. геом. [інтернет]. 10, Травень 2006 [цит. за 01, Травень 2024];2(4):372-87. доступний у: http://jmag.ilt.kharkiv.ua/index.php/jmag/article/view/jm02-0372e