Barannyk, T.A. (2002) “Conditional Symmetry and Exact Solutions of a Multidimensional Diffusion Equation”, Ukrains’kyi Matematychnyi Zhurnal, 54(10), pp. 1416–1420. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4179 (Accessed: 10 April 2025).