1. Research Notes;B. Ager,1995
2. Bliss, J.C. and Martin, A.J. (1989), ‘Identifying NIPF management motivations with qualitative methods’, Forest Science, 35(2): 601–622.
3. Report;B. Dahlin,1992
4. Danielsson, B. (1998), ‘Skogliga aktörer och den nya skogspolitiken’ (Forest actors and the new forest policy), Meddelande 2-1998, National Board of Forestry, Jönköping, Sweden, 87. [In Swedish with English summary].
5. Etelätalo, E. (1989), ‘Self-employment and methods used in silvicultural jobs in privately owned woodlots in Finland’, Työtehoseuran jukaisuja, 309, Work Efficiency Institute, Helsinki. [In Finnish with English summary].