Scots pine and Norway spruce foliage biomass in Finland and Sweden — testing traditional models vs. the pipe model theory - Lehtonen, Aleksi; Heikkinen, Juha; Petersson, Hans; Ťupek, Boris; Liski, Eero; Mäkelä, Annikki (Canadian Science Publishing, 2019)
Keywords: pipe model theory; carbon allocation; fertilization; site types (biology); soil nitrogen availability