Seismogenic destruction of the Kamenka medieval fortress, northern Issyk-Kul region, Tien Shan (Kyrgyzstan) - Andrey M. Korjenkov; J. Ramon Arrowsmith; Christopher Crosby; Ernes Mamyrov; Lyubov A. Orlova; Irina E. Povolotskaya; Kubatbek Tabaldiev (Journal of Seismology, 2006)