@misc{indiciae59ad6dc21f11,
  title = {A hierarchical model for PACS.},
  author = {C W Yang and P C Chung and C I Chang and S K Lee and L Y Kung},
  doi = {10.1016/s0895-6111(96)00059-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/9118068/},
  note = {Source identifier: 9118068}
}