@article{econhot_econhot-cited-ea5c800a2372fb3c, title = {Unobservable Selection and Coefficient Stability: Theory and Evidence}, author = {Emily F. Oster}, journal = {Journal of Business and Economic Statistics}, year = {2016}, volume = {37}, number = {2}, pages = {187-204}, doi = {10.1080/07350015.2016.1227711}, url = {https://doi.org/10.1080/07350015.2016.1227711} }