1708 20160222141733.0 SISMOimport-266 Dimitrov, Dimitar 2008 Surface co- and post-seismic deformations in the Chirpan-Plovdiv earthquakes region by geodetic data Georgiev, Ivan Ruegg, Jean-Claude Camelbeeck, Thierry Botev, Emil Geodesy - Bulgarian Academy of Sciences 19 2008 76-83 published in NONREF