A conjugate study of the polar ionospheric 2-layer and IRI-2007 at 75? magnetic latitude for solar minimum
HE Fang *;1,ZHANG BeiChen 1,Joran Moen 2,HUANG DeHong 1
Advances in Polar Science . 2011, (3): 175 -183 .  DOI: 10.3724/SP.J.1085.2011.00175