1. Evalution of Factors Controlling Net Photosynthetic Rate in Socts Pine Seedlings under Field Conditions Without Water Stress;Hari;Oecologica,1981
2. Field Studies of Photosynthesis as Affected by Water Stress, Temperature, and Light in Birch;Hari;Physiol. Plant.,1974
3. A new approach for measuring light inside the canopy in photosynthesis studies;Hari;Silva Fennica,1976
4. Hari, P., Nilson, T., Salminen, H., Kaipiainen, L., Korpilahti, E., & Ross, J. (in prep.): Nonlinear dependence of photosynthetic rate on light and its consequences on the estimates of the amount of formed carbohydrates
5. Eine Klapp-Küvette zur CO2-Gaswechselregistrierung an Blättern von Freilandspflanzen mit dem URAS;Lange;Ber. dtsch. bot. Ges.,1962