Ericsson, A., Lindgren, A., & Mattsson, A. (1983). Effects of cold-storage and planting date on subsequent growth, starch and nitrogen content in Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) seedlings. Swedish University of Agricultural Sciences, Faculty of Forestry.
Chicago-referens (17:e uppl.)Ericsson, Anders, Anders Lindgren, och Anders Mattsson. Effects of Cold-storage and Planting Date on Subsequent Growth, Starch and Nitrogen Content in Scots Pine (Pinus Sylvestris) and Norway Spruce (Picea Abies) Seedlings. Uppsala, Sweden: Swedish University of Agricultural Sciences, Faculty of Forestry, 1983.
MLA-referens (8:e uppl.)Ericsson, Anders, et al. Effects of Cold-storage and Planting Date on Subsequent Growth, Starch and Nitrogen Content in Scots Pine (Pinus Sylvestris) and Norway Spruce (Picea Abies) Seedlings. Swedish University of Agricultural Sciences, Faculty of Forestry, 1983.