@misc{indiciaec69c69539a6b,
  title = {Variations in the reproductive cycle of Dreissena polymorpha in Europe, Russia, and North America},
  author = {Susan Jerrine Nichols},
  year = {1996},
  doi = {10.1093/icb/36.3.311},
  url = {https://pubs.usgs.gov/publication/1000785},
  note = {Source identifier: 1000785}
}