Makarov V, Romanyuk N. New properties of the FD-method in its applications to the Sturm-Liouville problems . Dopov. Nac. akad. nauk Ukr. [Internet]. 2014 Feb. 28 [cited 2026 Jul. 11];(2):26-31. Available from: https://nasu-periodicals.org.ua/index.php/dp/article/view/17433