“SYNTHESE D’EXTRACTANTS ACIDES HEXADECYL- ET DECYLAMINOBIMETHYLENEDIPHOSPHONIQUES APPLICATION A L’EXTRACTION LIQUIDE-LIQUIDE DE Ni (II)”. Sciences & Technology. A, Exactes Sciences, no. 25, June 2007, pp. 9-14, http://conferences.umc.edu.dz/a/article/view/155.