M. S. Asante, C. Kazoora, J. Acworth, C. Tondo, B. Kazungu, A. Lawrence, W. Hawthorne, T. Pearson, S. Walker, S. Brown, J-L. Pfund, P. Robinson, A. H. Perera, J. B. Buse, T.R. Crow, S. F. Schram, B. Caterino, J. Vanclay, R. Prabhu, F. Sinclair
International Forestry Review 9 (2), 685-696, (1 June 2007) https://doi.org/10.1505/ifor.9.2.685