@Article{gi-5-417-2016,
AUTHOR = {Linkosalmi, M. and Aurela, M. and Tuovinen, J.-P. and Peltoniemi, M. and Tanis, C. M. and Arslan, A. N. and Kolari, P. and B\"ottcher, K. and Aalto, T. and Rainne, J. and Hatakka, J. and Laurila, T.},
TITLE = {Digital photography for assessing the link between vegetation phenology and
CO$_{2}$ exchange in two contrasting northern ecosystems},
JOURNAL = {Geoscientific Instrumentation, Methods and Data Systems},
VOLUME = {5},
YEAR = {2016},
NUMBER = {2},
PAGES = {417--426},
URL = {https://gi.copernicus.org/articles/5/417/2016/},
DOI = {10.5194/gi-5-417-2016}
}