@article{Nicolls2014b,
author = "M. J. Nicolls and H. Bahcivan and I. Haggstrom and M. Rietveld",
title = "Direct Measurement of Lower-Thermospheric Neutral Density using Multi-Frequency Incoherent Scattering",
year = 2014 ,
journal = "Geophys. Res. Lett.",
volume = 41,
number = 2,
pages = "8147-8154",
keywords = "amisr",
doi = " 10.1002/2014GL062204"
}