V.L. Makarov and Gavrilyuk, I. P. (2020) “The fictitious domain method and homotopy as a new alternative for multidimensional partial differential equations in domains of any shape”, Ukrains’kyi Matematychnyi Zhurnal, 72(2), pp. 191-208. Available at: http://umj.imath.kiev.ua/index.php/umj/article/view/1101 (Accessed: 5April2020).