Vlasenko, L. A., and N. A. Perestyuk. “On the Solvability of Impulsive Differential-Algebraic Equations”.
Ukrains’kyi Matematychnyi Zhurnal
, vol. 57, no. 4, Apr. 2005, pp. 458–468,
https://umj.imath.kiev.ua/index.php/umj/article/view/3612
.