BERBERIAN, M., and I. NAVAI. “Naghan (Chahar Mahal Bakhtiari-High Zagros, Iran) Earthquake of 6 April 1977. A Preliminary Field Report and a Seismotectonic Discussion”. Annals of Geophysics, vol. 31, no. 1, Nov. 1978, pp. 5-27, https://doi.org/10.4401/ag-4741.