Vlasenko, L. A., and N. A. Perestyuk. 2005. “On the Solvability of Impulsive Differential-Algebraic Equations”.
Ukrains’kyi Matematychnyi Zhurnal
57 (4): 458–468.
https://umj.imath.kiev.ua/index.php/umj/article/view/3612
.