1. Apps, M. J. and Kurz, W. A.: 1991, ?Assessing the Role of Canadian Forests and Forest Activities in the Global Carbon Balance?,World Resource Rev. 3, 333?344.
2. Boden, T. A., Kanciruk, P., and Farrell, M. P.: 1990,Trends '90, A Compendium of Data on Global Change, Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, Oak Ridge, TN, 257 pp.
3. Burschel, P., Kürsten, E., and Larson, B. C.: 1993, ?Die Rolle von Wald und Forstwirtschaft im Kohlenstoffhaushalt- Eine Betrachtung für die Bundesrepublik Deutschland?,Forstliche Forschungsberichte 126/1993, München, 135 pp.
4. Dewar, R. C. and Cannell, M. G. R.: 1992, ?Carbon Sequestration in the Trees, Products and Soils of Forest Plantations: An Analysis Using UK Examples?,Tree Physiol. 11, 49?71.
5. Energy Statistics: 1992,Statistics Finland, SVT, Energy 1993:1.