RT Journal Article SR Electronic(1) A1 Georgiev, I. A1 Dimitrov, D. A1 Botev, E.YR 2013 T1 Crustal Motion Monitoring in Bulgaria and Surrounding Regions by Permanent GPS Array JF , VO OP SP cp-362-00059 DO https://doi.org/10.3997/2214-4609.20131718 PB European Association of Geoscientists & Engineers, SN 2214-4609, AB , UL https://www.earthdoc.org/content/papers/10.3997/2214-4609.20131718