Protsakh, N.P., and O. E. Parasiuk-Zasun. “Inverse Problem for Semilinear Eidelman Type Equation”. Matematychni Studii 53, no. 1 (March 17, 2020): 48-58. Accessed December 22, 2024. http://matstud.org.ua/ojs/index.php/matstud/article/view/40.