Pshenichnov, Sergey, Marina Ryazantseva, Radan Ivanov, and Maria Datcheva. “Dynamic Problem for a Viscoelastic Hollow Cylinder With Coaxial Elastic Inclusion”. Proceedings of the Bulgarian Academy of Sciences 75, no. 8 (August 31, 2022): 1184–1194. Accessed October 1, 2022. https://proceedings.bas.bg/index.php/cr/article/view/140.