[Gower, S.T., Kucharik, C.J., Norman, J. M.1999. Direct and indirect estimation of leaf area index, fAPAR and net primary production of terrestrial ecosystems. - Remote Sensing of Environment, 70, 29-51.]Search in Google Scholar
[Heinsch, F.A., Zhao, M., Running, S.W., Kimball, J.S., Nemani, R.R., Davis, K.J., Bolstad, P.V., Cook, B.D., Desai, A.R., Ricciuto, D.M., Law, B.E., Oechel, W.C., Kwon, H.J., Luo, H., Wofsy, S.C., Dunn, A.L., Munger, J.W., Baldocchi, D.D., Xu, L., Hollinger, D.Y., Richardson, A.D., Stoy, P.C., Siqueira, M.B.S., Monson, R.K., Burns, S.P., Flanagan, L.B. 2006. Evaluation of remote sensing based terrestrial productivity from MODIS using regional tower eddy flux network observations. - IEEE Transactions on Geoscience and Remote Sensing, 44(7), 1908-1925.]Search in Google Scholar
[NCEP, 2012. National Centers for Environmental Prediction NCEP. [WWW document]. - URL http://www.ncep.noaa.gov/. [Accessed February 2, 2012].]Search in Google Scholar
[Russak, V., Kallis, A. 2003. Eesti kiirguskliima teatmik. (Handbook of Estonian Solar Radiation Climate). EMHI, Tallinn. (In Estonian).]Search in Google Scholar
[Turner, D.P., Ollinger, S., Smith, M.-L., Krankina, O., Gregory, M. 2004. Scaling net primary production to a MODIS footprint in support of Earth observing system product validation. -International Journal of Remote Sensing, 25(10), 1961-1979.]Search in Google Scholar
[Wofsy, S.C., Goulden, M.L., Munger, J.W., Fan, S.-M., Bakwin, P.S., Daube, B.C., Bassow, S.L., Bazzaz, F.A. 1993. Net exchange of CO2 in a mid-latitude forest. - Science, 260, 1314-1317.]Search in Google Scholar
