Ma, Zhong-Xin, Rong-Nian Wang, and Yang-Yang Yu. “The Airy Equations With Impulsive Effect: Multi-Valued Nonlinear Perturbations”. Topological Methods in Nonlinear Analysis 59, no. 1 (March 13, 2022): 359–384. Accessed March 10, 2025. https://apcz.umk.pl/TMNA/article/view/37691.