Chernobai, O.B. (2012) “On generalized solutions of differential equations with several operator coefficients”,
Ukrains’kyi Matematychnyi Zhurnal, 64(6), pp. 860–864. Available at:
https://umj.imath.kiev.ua/index.php/umj/article/view/2624 (Accessed: 10 April 2025).