Keilis-Borok, V. I. “The Determination of Earthquake Mechanism, Using Both Longitudinal and Traverse Waves”. Annals of Geophysics 10, no. 1-2 (November 25, 1957): 105–128. Accessed April 20, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/5882.