1J.P. Lhomme, Annual rainfall evolution in Cote d'Ivoire since the sixtieth years, the Meteorology VIth Serie 25 (1981) 135-140.
2H.E. Landsberg, Sahel drought: Change of climate or part of climate?, Arch. Met. Geoph. Biok. Serie B 23 (1975) 193-200.
3J. Servain, S. Lukas, Climate atlas of tropical Atlantic wind stress and sea surface temperature 1985-1989, Publications and Documentations Service (S.D.P.), IFREMER, Center of Brest, Plouzan6, France, 1990, p. 133.
4A.B. Pittock, Patterns of climatic variation in Argentina and Chile-I, Precipitation, 1931-1960, Monthly Weather Review 108 (1980) 1347-1361.
5M.J. Salinger, New Zealand climate: I. Precipitation patterns, Monthly Weather Review 108 (1980) 1892-1904.
6A. Matari, A. Douguedroit, Chronology of rainfall and drought in western Algeria, in: 9th Afro-Asian Conference on Irrigation and Drainage, Alger, 1995, pp. 265-278.
7K.E. Ali, K.Y. Kouadio, E.P. Zahiri, A. Aman, A.P. Assamoi, B. Bourles, Influence of the Gulf of Guinea coastal upwellings on the precipitations along its northern coasts during the boreal summer period, Asian Journal of Applied Science 43 (2011 ) 271-285.
8P.J. Lamb, Case studies of tropical Atlantic surface circulation patterns during recent sub-Saharan weather anomalies: 1967 and 1968, Monthly Weather Review 114 (1978) 561-570.
9J.M. Lough, Tropical Atlantic sea surface temperature and rainfall variations in Subsaharan Africa, Monthly Weather Review 114 (1986) 561-570.
10N. Ward, Diagnosis and short lead time prediction of summer rainfall in tropical North Africa at interannual and multidecadal timescales, Journal of Climate 12 (1998) 3167-3191.
