1.
Mikhailets V, Molyboga V. On spectral gaps of the Hill—Schrödinger operator with singular potential . Dopov. Nac. akad. nauk Ukr. [Internet]. 2018 Oct. 28 [cited 2026 Jun. 19];(10):3-8. Available from: https://nasu-periodicals.org.ua/index.php/dp/article/view/3019