1.
Mylyo OY, Storozh OG. A Differential Boundary Operator of the Sturm–Liouville Type on a Semiaxis with Two-Point Integral Boundary Conditions. Ukr. Mat. Zhurn. [Internet]. 2002Nov.25 [cited 2024Jul.27];54(11):1480-5. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/4186