1. Ahlgren, K. 1998. Bioenergins sysselsättningseffekter (The employment effects of bioenergy). Länsstyrelsen i Värmland. Rapport 1998: 12.
2. Bembridge, TJ. 1995. Woodlots, woodfuel and energy strategies for Ciskei. South African Forestry Journal 155: 42–50. University of Fort Hare. Alice, Ciskei.
3. Bensel, T.G. and Remedio, E.M. 1993. Patterns of commercial woodfuel supply, distributon and use in the City and Province of Cebu, Philippines. FAO RWEDP Field Document No. 42. Food and Agriculture Organization of the United Nations, Bangkok, Thailand. 123 p.
4. Bijlsma, R.G. 1999. Zomervellingen desastreus voor Broedvogels. Nederlands Bosbouw Tijdschrift 71(2): 42–46.
5. Black, R. and Sessay, M.F. 1997. Forced migration, environmental change and woodfuel issues in the Senegal River Valley. Environmental Conservation. 24(3): 251–260.