KonetI. M., PerestyukN. A., SamoilenkoA. M., and TeplinskyYu. V. “International Scientific Conference on the Theory of Evolution Equations (Fifth Bogolyubov Readings)”. Ukrains’kyi Matematychnyi Zhurnal 54, no. 10 (October 25, 2002): 1440. Accessed November 22, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4182.