@article{WackervonElert2003,
  author    = {Alexander Wacker and Eric von Elert},
  title     = {Food quality controls reproduction of the zebra mussel (Dreissena polymorpha)},
  url       = {http://www.link.springer.de/link/service/journals/00442/contents/03/01208/paper/s00442-003-1208- 5ch000.html},
  year      = {2003},
}