1. http://www.who.int/medicines/services/inn/innguidance/en/
2. Think INN, prescribe INN, dispense INN: good professional practice;Prescrire Int,2000
3. International Society of Drug Bulletins INN: an essential tool. I.S.B.D Newsletter 2006 http://www.who.int/medicines/services/inn/ISDBNewsletterINNs_Nov06_WhatsNew.pdf