Li, Q., Rapp, M., Röttger, J., Latteck, R., Zecha, M., Strelnikova, I., Baumgarten, G., Hervig, M., Hall, C., & Tsutsumi,
M. (2010). Microphysical parameters of mesospheric ice clouds derived from calibrated
observations of polar mesosphere summer echoes at Bragg wavelengths of 2.8 m and 30 cm. Journal Geophysical
Research, 115:. doi:10.1029/2009JD012271.