1. Prospects for the use of new vaccines in developing countries: cost is not the only impediment;Hausdorff;Vaccine,1996
2. Financing of vaccines;Barton;Lancet,2000
3. Win-win interactions between the public and the private sectors;Batson;Nat Med,1998
4. Supply division annual report 2000,2001
5. Whitehead P. Pasternak A. 2002 new procurement strategies for vaccines Lessons learned