Kouraev Alexei V., Papa Fabrice, Buharizin Petr I., Cazenave Anny, Cretaux Jean-Francois, Dozortseva Julia, and Remy Frederique. 2003. “Ice Cover Variability in the Caspian and Aral Seas from Active and Passive Microwave Satellite Data”. Polar Research 22 (1):43-50. https://doi.org/10.3402/polar.v22i1.6442.