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Heckel, Andreas, et al. "Aerosol Retrieval Experiments in the ESA Aerosol_cci Project." Atmospheric Measurement Techniques 6, no. 8 (2013): 1919-1957.

Heckel, Andreas, et al. "Aerosol Retrieval Experiments in the ESA Aerosol_cci Project." Atmospheric Measurement Techniques 6.8 (2013): 1919-1957.