@misc{indiciae1727b9d4d4bb,
  title = {Some covariance models for longitudinal count data with overdispersion.},
  author = {P F Thall and S C Vail},
  year = {1990},
  url = {https://pubmed.ncbi.nlm.nih.gov/2242408/},
  note = {Source identifier: 2242408}
}