Baranetskij Y, Kalenyuk P, Kopach MI, Solomko A. The nonlocal multipoint problem with Dirichlet-type conditions for an ordinary differential equation of even order with involution. Mat. Stud. [Internet]. 2020Oct.5 [cited 2024Apr.16];54(1):64-8. Available from: http://matstud.org.ua/ojs/index.php/matstud/article/view/31