Raykova, Plamena, Dimcho Solakov, and Stela Simeonova. “A New Empirical Relation Converting Magnitude Applied in Bulgarian Seismological Practice $$(\rm M_P)$$ to Moment Magnitude $$(\rm M_W)$$”. Proceedings of the Bulgarian Academy of Sciences 78, no. 3 (March 28, 2025): 383–392. Accessed October 29, 2026. https://www.proceedings.bas.bg/index.php/cr/article/view/722.