eq_0=5286&t=101650&s=13&d=22,26,13,12&nd=display Nikoleishvili, I. Earthquake in Racha and Middle Age Monuments (ингл.). Дата обращения: 10 август 2010
Georgescu E. S. The partial collapse of Coltzea Tower during the Vrancea earthquake of 14/26 October 1802: the historical warning of long-period ground motions