The midnight temperature maximum from Arecibo incoherent scatter radar ion temperature measurements
C. Martinis, D. Hickey, W. Oliver, N. Aponte, C.G.M. Brum, R. Akmaev, A. Wright, C. Miller, 2013, Journal Of Atmospheric and Solar-Terrestrial Phyiscs

A nighttime temperature maximum in the thermosphere above Saint Santin in winter
W.L. Oliver, C.R. Martinis, D.A. Hickey, A.D. Wright, C. Amory-Mazaudier, 2012, Journal of Geophysical Research, 117, A06324;jsessionid=DC21590D0AE3A1BBDBEED574283FA16C.d01t04?deniedAccessCustomisedMessage=&userIsAuthenticated=falseshapeimage_2_link_0shapeimage_2_link_1