Campbell WC (May 2012). "History of avermectin and ivermectin, with notes on the history of other macrocyclic lactone antiparasitic agents". Current Pharmaceutical Biotechnology. 13 (6): 853-865. doi:10.2174/138920112800399095. PMID22039784.
Campbell WC (May 2012). "History of avermectin and ivermectin, with notes on the history of other macrocyclic lactone antiparasitic agents". Current Pharmaceutical Biotechnology. 13 (6): 853-865. doi:10.2174/138920112800399095. PMID22039784.