AMBRASEYS, N. N., and A. A. MOINFAR. “The Seismicity of Iran. The Kaj Darakht, Khurasan, Earthquake of 25lh May, 1923”. Annals of Geophysics 30, no. 1-2 (November 25, 1977): 3–18. Accessed October 19, 2021. https://www.annalsofgeophysics.eu/index.php/annals/article/view/4813.