@misc{indiciae1d8d3d84406a,
  title = {Abstract power structures (APS) and related bumping orders.},
  author = {G B Robison},
  year = {1967},
  doi = {10.1007/bf02476894},
  url = {https://pubmed.ncbi.nlm.nih.gov/6051601/},
  note = {Source identifier: 6051601}
}