@misc{indiciae0b7a57f03538,
  title = {A two-level cross-sectional model using grafted polynomials.},
  author = {H Q Pan and H Goldstein and G Di},
  doi = {10.1080/03014469200002212},
  url = {https://pubmed.ncbi.nlm.nih.gov/1616289/},
  note = {Source identifier: 1616289}
}