1. Density and moisture content of wood and bark, and bark percentage in the branches of birch, Norway spruce, and Scots pine [Betula verrucosa, Betula pubescens Ehrh., Pinus silvestris L., Picea abies L.];Kärkkäinen;Silva Fennica (Finland),1976
2. Lehtikangas, R. Jirjis, Storage of wood chips and bark in northern Sweden, Rapport-Institutionen för Virkeslära, Sveriges Lantbruksuniversitet, Uppsala, Sweden; 1998.
3. Fuel quality of stored wood chips–influence of semi-permeable covering material;Anerud;Appl Energy,2018
4. Jirjis R, Lehtikangas P, Lagring av torkad bark i ventilerad stack, Swedish University of Agricultural Sciences, Department of Forest Products; 1994.
5. Storage of comminuted and uncomminuted forest biomass and its effect on fuel quality;Afzal;BioResources,2009