@article{TittelBissingerZippeletal.2003,
  author    = {J{\"o}rg Tittel and Vera Bissinger and Barbara Zippel and Ursula Gaedke and Elanor M. Bell and Andreas Lorke and Norbert Kamjunke},
  title     = {Mixotrophs combine resource use to outcompete specialists: Implications for aquatic food webs},
  url       = {www.pnas.org/cgi/doi/10.1073/pnas.2130696100},
  year      = {2003},
}