%0 Journal Article %T Diurnal variation of F2-layer critical frequency under solar activity recurrent conditions during solar cycles 21 and 22 at Ouagadougou Station: Prediction with IRI-2012 %A Emmanuel Wambi Sawadogo %A Fr&ed&eric Ouattara %A Jean Louis Zerbo %A Nour Ali Mahamat %J - %D 2019 %R 10.5897/SRE2019.6636 %U https://academicjournals.org/journal/SRE/article-abstract/3D7EAEC61569