@article{Federle2006tree,
  author = {Federle and Barnes and Baumgartner and others},
  title = {Wet but not slippery: boundary friction in tree frog adhesive toe pads},
  journal = {Journal of The Royal Society Interface},
  year = {2006},
  doi = {10.1098/rsif.2006.0135},
  url = {https://doi.org/10.1098/rsif.2006.0135}
}

@article{Federle2002ant,
  author = {Federle},
  title = {An Integrative Study of Insect Adhesion: Mechanics and Wet Adhesion of Pretarsal Pads in Ants},
  journal = {Integrative and Comparative Biology},
  year = {2002},
  doi = {10.1093/icb/42.6.1100},
  url = {https://doi.org/10.1093/icb/42.6.1100}
}

@article{Eisner2000beetle,
  author = {Eisner and Aneshansley},
  title = {Defense by foot adhesion in a beetle ( Hemisphaerota cyanea )},
  journal = {Proceedings of the National Academy of Sciences},
  year = {2000},
  doi = {10.1073/pnas.97.12.6568},
  url = {https://doi.org/10.1073/pnas.97.12.6568}
}