@article{PiephoMartinCreuzburgWacker2012,
  author    = {Maike Piepho and Dominik Martin-Creuzburg and Alexander Wacker},
  title     = {Phytoplankton sterol contents vary with temperature, phosphorus and silicate supply a study on three freshwater species},
  journal   = {European journal of phycology},
  volume    = {47},
  number    = {2},
  pages     = {138 -- 145},
  doi       = {10.1080/09670262.2012.665484},
  year      = {2012},
}