Frédéric, O., Nour, A. M., & François, Z. (2015). A COMPARATIVE STUDY OF SEASONAL AND QUIETTIME foF2 DIURNAL VARIATION AT DAKAR AND OUAGADOUGOU STATIONS DURING SOLAR MINIMUM AND MAXIMUM FOR SOLAR CYCLES 21-22. European Scientific Journal, ESJ, 11(24). Retrieved from https://eujournal.org/index.php/esj/article/view/6127