@other{https://resolver.caltech.edu/CaltechAUTHORS:20200109-081212045, title = "Hidden Donors: The Censoring Problem in U.S. Federal Campaign Finance Data", year = "2020", url = "https://resolver.caltech.edu/CaltechAUTHORS:20200109-081212045", id = "record", doi = "10.33774/apsa-2020-sdjkp" }