[1]
Boichuk О. A., V. F. Zhuravlev, and A. M. Samoilenko, “Weakly nonlinear boundary-value problems for operator equations with pulse influence”,
Ukr. Mat. Zhurn., vol. 49, no. 2, pp. 272–288, Feb. 1997, Accessed: Apr. 13, 2025. [Online]. Available:
https://umj.imath.kiev.ua/index.php/umj/article/view/5004