@article{Frölich2018, author = "Markus Frölich and Martin Huber", title = "{Including covariates in the regression discontinuity design}", year = "2018", month = "1", url = "https://tandf.figshare.com/articles/journal_contribution/Including_covariates_in_the_regression_discontinuity_design/5787498", doi = "10.6084/m9.figshare.5787498.v1" }