@article{foldingandunfoldingonmetagraphs,
  title = {Folding and Unfolding on Metagraphs},
  author = {Ben Goertzel},
  year = {2020},
  eprint = {2012.01759},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2012.01759v3},
}