1. New Zealand Plantation Forest Industry: Facts and Figures 2014
2. New Zealand Plantation Forest Industry: Facts and Figures 2012/2013
3. Kawasaki, H., Murakami, S., Kachi, H., and Ueki, S., 2008, “Novel Climbing Method of Pruning Robot,” SICE Annual Conference, Tokyo, Japan, Aug. 20–22, pp. 160–163.10.1109/SICE.2008.4654641
4. New Zealand Plantation Forest Industry: Facts and Figures 2011/2012
5. Chonnaparamutt, W., Kawasaki, H., Ueki, S., Murakami, S., and Koganemaru, K., 2009, “Development of a Timberjack-Like Pruning Robot: Climbing Experiment and Fuzzy Velocity Control,” ICCAS-SICE International Joint Conference, Fukuoka, Japan, Aug. 18–21, pp. 1195–1199.http://ieeexplore.ieee.org/document/5335034/