1. United Nations: United Nations Millennium Development Goals (MDG). 2000, accessed: 15 May 2003, [ http://www.un.org/millenniumgoals/ ]
2. Mills A: More funds for health: the challenge facing recipient countries. Bulletin of the World Health Organization. 2002, 80: 164-165.
3. Hanson K, Ranson K, Oliveira-Cruz V, Mills A: Constraints to scaling up health interventions: a conceptual framework. Journal of International Development. 2003, 15: 1-14. 10.1002/jid.963.
4. Zurn P, Dal Poz M, Stilwell B, Adams O: Imbalances in the health workforce: briefing paper. Geneva: World Health Organization. 2002, accessed 25 February 2003, [ http://www.who.int/hrh/documents/en/imbalances_briefing.pdf ]
5. Loutan L: Les problèmes de santé dans les zones nomades. In: La Santé en Pays Tropicaux. Edited by: Rougement A, Brunet-Jailly J. 1989, Paris: Doin Editeurs, 219-253.