RT Journal Article SR Electronic(1) A1 F. B. Bolte, J. A1 J. Verschuur, D. A1 F. Hegge, R.YR 1999 T1 Imaging and Velocities I - Estimation of Focussing Operators for Imaging JF , VO OP SP cp-132-00164 DO https://doi.org/10.3997/2214-4609.201407761 PB European Association of Geoscientists & Engineers, SN 2214-4609, AB , UL https://www.earthdoc.org/content/papers/10.3997/2214-4609.201407761