RT Journal Article SR Electronic(1) A1 Biegert, E.K. A1 Witte, S.YR 2001 T1 4D Monitoring Using Gravity and Gravity Gradients JF , VO OP SP cp-15-00312 DO https://doi.org/10.3997/2214-4609-pdb.15.IG-6 PB European Association of Geoscientists & Engineers, SN 2214-4609, AB , UL https://www.earthdoc.org/content/papers/10.3997/2214-4609-pdb.15.IG-6