@misc{indiciaee1d3e7b12c54,
  title = {Techniques for estimating the source and direction of causal influence in panel data.},
  author = {A H Yee and N L Gage},
  year = {1968},
  doi = {10.1037/h0025927},
  url = {https://pubmed.ncbi.nlm.nih.gov/4876690/},
  note = {Source identifier: 4876690}
}