A detailed seismic anisotropy study during the 2011-2012 unrest period in the Santorini Volcanic Complex - Kaviris, G.; Papadimitriou, P.; Kravvariti, P.; V. Kapetanidis; A. Karakonstantis; Voulgaris, N.; Makropoulos, K. (Physics of the Earth and Planetary Interiors, 2015)