First real time detection of 7Be solar neutrinos by Borexino Physics Letters B Volume 658, Issue 4, 3 January 2008, Pages 101-108 doi:10.1016/j.physletb.2007.09.054 Submitted 10 August 2007, Revised 12 September 2007, Accepted 20 September 2007, Available online 5 October 2007 (local