GÓRNIEWICZ, Lech, NTOUYAS, Sotiris K. and O’REGAN, Donal. Existence results for first and second order semilinear impulsive differential inclusions. Topological Methods in Nonlinear Analysis. Online. 1 September 2005. Vol. 26, no. 1, pp. 135 - 162. [Accessed 22 July 2024].