1. World Bank (1992, March). IEN Working Papers, Energy series No 51, (Floor and van der Plas), CO2 Emissions by the Residential Sector: Environmental Implications of Interfuel Substitution.
2. World Bank/ESMAP (1994, report 160/94). Eléments de stratégie pour l’énergie domestique urbaine: le cas de N’Djaména.
3. World Bank (1995, March). Energy Issues, FPD Energy Note No.1 (van der Plas); Burning Charcoal Issues.
4. World Bank (1997, April). Technical Paper No. 362, Energy Series, (Foley, Floor, Madon, Lawali, Montagne and Tounao), The Niger Household Energy Project, Promoting rural fuelwood markets and village management of natural woodlands.
5. World Bank (2001, Kerkhof, Madougou & Foley), A Review of the Rural Firewood Market Strategy in West Africa.