Nakajima, N.Y., S. Yoshida, and M. Imanaga. 1996. Comparison of change estimation between four ground-survey methods for use in a continuous forest inventory system.. In Journal of Forest Planning, vol. 2, pp. 145-150.
Scott, C.T., M. Kohl, and H.J. Schnellbacher. 1999. A comparison of periodic and annual forest surveys. In Forest Science, vol. 45, pp. 433-451.