@misc{indiciae1e42decdc08a,
  title = {Mathematical coupling: a multilevel approach.},
  author = {Mark S Gilthorpe and Yu-Kang Tu},
  year = {2004},
  doi = {10.1093/ije/dyh302},
  url = {https://pubmed.ncbi.nlm.nih.gov/15358741/},
  note = {Source identifier: 15358741}
}