Aeroradiometric measurements in the framework of the Swiss exercise ARM12 / Gernot Butterweck [...et al.]. - Villigen : Paul Scherrer Institut, 2013. - 45 p. : ill. - Paul Scherrer Institut Bericht 13-01 1019-0643 PSI Bericht 1019-0643 . Includes bibliogr. references : (p. 34-36) Subjects--Topical Terms: Geophysics--Radiation