"Validation of the OpCost logging cost model using contractor surveys”
Occurring in the International Journal of Forest Engineering, Vol. 28 (2), 2017. The authors were C Bell , R Keefe and J Fried. Source
"Operational efficiency analysis of New Zealand timber harvesting contractors using data envelopment analysis”
Occurring in the International Journal of Forest Engineering, Vol. 28 (2), 2017. The authors were O Obi & R Visser. Source
"Forwarder crane’s boom tip control system and beginner-level operators”
Occurring in Silva Fennica, Vol. 51 (2), 2017. The authors were J Manner, O Gelin, A Mörk and M Englund. Source