@article{PromisGaertnerButlerManningetal.2013,
  author    = {Alvaro Promis and Stefanie G{\"a}rtner and David Butler-Manning and Cristabel Dur{\´a}n-Rangel and Albert Reif and Gustavo Cruz and Lionel Hern{\´a}ndez},
  title     = {Comparison of four different programs for the analysis of hemispherical photographs using parameters of canopy structure and solar radiation transmittance},
  journal   = {Wald{\"o}kologie, Landschaftsforschung und Naturschutz = Forest ecology, landscape research and nature conservation},
  volume    = {11},
  pages     = {19 -- 33},
  year      = {2013},
}