@article{Martnez1998no,
  author = {Martı́nez},
  title = {Mortality Patterns Suggest Lack of Senescence in Hydra},
  journal = {Experimental Gerontology},
  year = {1998},
  doi = {10.1016/S0531-5565(97)00113-7},
  url = {https://doi.org/10.1016/S0531-5565(97)00113-7}
}

@article{Schaible2015constant,
  author = {Schaible and Scheuerlein and Dańko and others},
  title = {Constant mortality and fertility over age in Hydra},
  journal = {Proceedings of the National Academy of Sciences},
  year = {2015},
  doi = {10.1073/pnas.1521002112},
  url = {https://doi.org/10.1073/pnas.1521002112}
}