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↑Ratle, G; Monseur, X; Das, BC; Yassi, J; Khuong-Huu, Q; Goutarel, R (1966). "Prosopine and prosopinine alkaloids of Prosopis africana (Guill and Perr) Taub. (Preliminary note)". Bulletin de la Société Chimique de France (in French). 9: 2945–7. PMID5992092.