Borovsky, Joseph E & Denton, Michael H. Electron loss rates from the outer radiation belt caused by the filling of the outer plasmasphere: the calm before the storm, article, January 1, 2009; (https://digital.library.unt.edu/ark:/67531/metadc927261/m1/1/: accessed April 18, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .