@article{modelingmajortransitionsinevolutionwith,
  title = {Symbiosis Promotes Fitness Improvements in the Game of Life},
  author = {Peter D. Turney},
  year = {2019},
  eprint = {1908.07034},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1908.07034v3},
}