TY  - RPRT
TI  - Techniques for estimating the source and direction of causal influence in panel data.
AU  - A H Yee
AU  - N L Gage
PY  - 1968
DO  - 10.1037/h0025927
UR  - https://pubmed.ncbi.nlm.nih.gov/4876690/
ID  - 4876690
ER  -