Institution: | 1. Department of Energetic Engineering, UIT, University of Ngaoundere, Ngaoundere, Cameroon 2. Department of Physics, University of Yaounde 1, Faculty of Sciences, Yaounde, Cameroon 3. Institut Pprime, UPR 3346 CNRS, ISAE - ENSMA, Université de Poitiers, Poitiers, France
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