1. Electric Mars: The first direct measurement of an upper limit for the Martian "polar wind" electric potential. Issue 21 (5th November 2015) Authors: Collinson, Glyn; Mitchell, David; Glocer, Alex; Grebowsky, Joseph; Peterson, W. K.; Connerney, Jack; Andersson, Laila; Espley, Jared; Mazelle, Christian; Sauvaud, Jean‐André; Fedorov, Andrei; Ma, Yingjuan; Bougher, Steven; Lillis, Robert; Ergun, Robert; Jakosky, Bruce Journal: Geophysical research letters Issue: Volume 42:Issue 21(2015:Nov.) Page Start: 9128 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗