RT Journal Article SR Electronic(1) A1 Brauch, Klaus A1 Symons, GregoryYR 2015 T1 Commercial Geophysical Surveying using an Ultralight Aircraft JF , VO 2015 IS 1 SP 1 OP 4 DO https://doi.org/10.3997/2214-4609.201411988 PB European Association of Geoscientists & Engineers, SN 2214-4609, AB , UL https://www.earthdoc.org/content/papers/10.3997/2214-4609.201411988