@article{Weithoff2003,
  author    = {Guntram Weithoff},
  title     = {The concepts of 'plant functional types' and 'functional diversity' in lake phytoplankton : a new understanding of phytoplankton ecology},
  url       = {http://www.blackwell-synergy.com/servlet/ useragent?func=synergy\&synergyAction=showTOC\&journalCode=fwb\&volume=48\&issue=9\&year=2003\&part=null},
  year      = {2003},
}