@article{Sojka2011a,
author = "J. J. Sojka and M. Nicolls and A. van Eyken and C. Heinselman and D. Bilitza",
title = "24/7 Solar minimum polar cap and auroral ion temperature observations",
year = 2011 ,
journal = "Advances in Space Research",
volume = 48,
keywords = "amisr, pfisr",
doi = "10.1016/j.asr.2011.03.005"
}