1. Bayliss-Smith T. 1974. Constraints on population growth: the case of the Polynesia outlier atolls in the precontact period. Human Ecology 2: 259-295.
2. Boserup E. 1965. The conditions of agricultural growth: the economics of agrarian change under population pressure. George Allen & Unwin, London.
3. Boserup E. 1981. Population and technological change: a study of long-term trends. The University of Chicago Press, Chicago.
4. Brewer JD. 1979. Agricultural knowledge and cultural practice in two Indonesian villages. Doctoral thesis submitted to University of California, Los Angeles.
5. Bruun TB, Mertz O, Elberling B. 2006. Linking yields of upland rice in shifting cultivation to fallow length and soil properties. Agriculture, Ecosystems and Environment 113: 139-149.