1. Bray, J. R. & Gorham, E. 1964. Litter production in forests of the world. Advances in Ecological Research 2: 101-157. Cannell, M. G. R. 1989. Physiological basis of wood production: A review. Scandinavian Journal of Forest Research 4: 459-490.
2. Hozumi, K. 1975. Studies on the frequency distribution of the weight of individual trees in a forest stand. V. The M-w diagram for various types of forest stands. Japanese Journal of Ecology 25: 123-131.
3. Analysis of spatial association between two species based on the interspecies mean crowding
4. Jarvis, P. G. & Leverenz, J. W. 1983. Productivity of temperate, deciduous and evergreen forests. In: Lange, O. L., Nobel, P. S., Osmond, C. B. & Ziegler, H. (eds.) Physiological Plant Ecology IV, 234-280. Springer-Verlag, New York.