Lozanova, Siya, Martin Ralchev, and Chavdar Roumenin. “Generation of Microparticles in Rock Structures”. Proceedings of the Bulgarian Academy of Sciences 75, no. 12 (December 23, 2022): 1813–1821. Accessed February 9, 2023. https://proceedings.bas.bg/index.php/cr/article/view/221.