POVSTENKO, Yuriy. “Solutions to Diffusion-Wave Equation in a Body With a Spherical Cavity under Dirichlet Boundary Condition”. An International Journal of Optimization and Control: Theories & Applications (IJOCTA) 1, no. 1 (June 27, 2011): 3–16. Accessed April 3, 2025. http://ijocta.org/index.php/files/article/view/35.