@article{Hales2001honeycomb,
  author = {Hales},
  title = {The Honeycomb Conjecture},
  journal = {Discrete & Computational Geometry},
  year = {2001},
  doi = {10.1007/s004540010071},
  url = {https://doi.org/10.1007/s004540010071}
}

@article{Karihaloo2013bee,
  author = {Karihaloo and Zhang and Wang},
  title = {Honeybee combs: how the circular cells transform into rounded hexagons},
  journal = {Journal of The Royal Society Interface},
  year = {2013},
  doi = {10.1098/rsif.2013.0299},
  url = {https://doi.org/10.1098/rsif.2013.0299}
}