College of Forest Resources, University of Washington
College of Forestry at Oregon State University
Department of Forest Ecology and Management at University of Wisconsin
School of Forestry and Environmental Studies, Yale University
School of Forestry and Wood Products, Michigan Technological University
Forestry Faculty, University of Northern British Columbia
Faculty of Forestry, The University of British Columbia
Haliburton Forest and Wildlife Reserve Ltd.
Forestry at Wageningen University & Research Centre
Finnish Forest Research Institute
Estonian Ministry of Environment
Department of Forest Ecology, University of Helsinki
Department of Forerstry, University of Aberdeen
Ministry of Forests, British Columbia, Publications
ESBM, School of Renewable Natural Resources, Oulu Polytecnic, Finland
BIOSPHERE RESERVE, HIIUMAA CENTRE