@article{econhot_econhot-cited-33e6eb0e6cde146c,
  title = {Efficient Estimation of a System of Regression Equations when Disturbances are Both Serially and Contemporaneously Correlated},
  author = {Richard W. Parks},
  journal = {Journal of the American Statistical Association},
  year = {1967},
  volume = {62},
  number = {318},
  pages = {500-509},
  doi = {10.1080/01621459.1967.10482923},
  url = {https://doi.org/10.1080/01621459.1967.10482923}
}