Douira, A., Achbani, A., Tourvieille, D., Bahsine, M., Serrhini, M.N. and Laamaraf, N. 2000. Downy Mildew («Plasmapara halstedii») : Importance and Geographical Distribution on Sunflower in Morocco. Phytopathologia Mediterranea. 39, 2 (Aug. 2000), 283–288. DOI:https://doi.org/10.14601/Phytopathol_Mediterr-1568.