@misc{geller_the_energy_1989, author={Geller, W.}, title={The energy budget of two sympatric Daphnia species in Lake Constance: productivity and energy residence times}, year={1989}, howpublished = {journal article}, note = {Online available at: \url{} (DOI). Geller, W.: The energy budget of two sympatric Daphnia species in Lake Constance: productivity and energy residence times. Oecologia. 1989. vol. 78, 242-250.}}