MA, Zhong-Xin, WANG, Rong-Nian and YU, Yang-Yang. The Airy equations with impulsive effect: multi-valued nonlinear perturbations. Topological Methods in Nonlinear Analysis. Online. 13 March 2022. Vol. 59, no. 1, pp. 359 - 384. [Accessed 6 May 2024]. DOI 10.12775/TMNA.2021.033.