1. Administrative Office of the United States Courts. (2020).U.S. District Courts—Judicial Business 2020.https://www.uscourts.gov/statistics-reports/us-district-courts-judicial-business-2020
2. Administrative Office of the United States Courts. (2021).Civil nature of suit code descriptions (rev. 04/21).https://www.uscourts.gov/sites/default/files/js_044_code_descriptions.pdf