“A Comparison of Soil Compaction Associated with Four Ground-Based Harvesting Systems”
Occurring in the Northern Journal of Applied Forestry (2011), Vol. 28 (4), pp. 194 - 198. Authors: O Butos and A Egan. Access at http://www.ingentaconnect.com/content/saf/njaf/2011/00000028/00000004;jsessionid=d9eoypx932a1.alexandra
“The effects of whole-tree harvesting on three sites in upland Britain on the growth of Sitka spruce over ten years”
Occurring in “Forestry” (2012), 85 (1), pp. 111 - 123. Authors: W Mason, H McKay, A Weatherall, T Connolly and A Harrison. Access at http://forestry.oxfordjournals.org/content/85/1/111.abstract