@article{spatialalignmentgroupstrategyandnonkin,
  title = {Spatial alignment, group strategy and non-kin selection enable the evolution of cooperation},
  author = {Xiaoliang Wang and Andrew Harrison},
  year = {2021},
  eprint = {2103.11925},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2103.11925v2},
}