N.Id Omar, L.Boukhattem, F.Oudrhiri Hassani, M.Akhsassi, A.Ouknou, “Comparison of the electrical power estimated by different mathematical models with the one produced by the solar photovoltaic generators connected to the electric grid at ENSA-Safi”, The international conference Humboldt Colleg, “Beacons of hope in the quest for the next Einstein in Africa/Mena”, 04 – 06 April 2018, Marrakech, Morocco.