@article{KoechyTielboerger2007,
  author    = {Martin K{\"o}chy and Katja Tielb{\"o}rger},
  title     = {Hydrothermal time model of germination : parameters for 36 Mediterranean annual species based on a simplified approach},
  doi       = {10.1016/j.baae.2006.04.002},
  url       = {http://www.sciencedirect.com/science/journal/14391791},
  year      = {2007},
}