Chasen, Stephen T.; Kalish, Robin B.; Gupta, Meruka; Kaufman, Jane E.; Rashbaum, William K.; Chervenak, Frank A. (2004). "Dilation and evacuation at >or=20 weeks: comparison of operative techniques". American Journal of Obstetrics and Gynecology. 190 (5): 1180–1183. doi:10.1016/j.ajog.2003.12.034. ISSN0002-9378. PMID15167815.
Chasen, Stephen T.; Kalish, Robin B.; Gupta, Meruka; Kaufman, Jane; Chervenak, Frank A. (2005). "Obstetric outcomes after surgical abortion at > or = 20 weeks' gestation". American Journal of Obstetrics and Gynecology. 193 (3 Pt 2): 1161–1164. doi:10.1016/j.ajog.2005.05.078. ISSN0002-9378. PMID16157130.
Gonzales v. Carhart, 550 U.S. ____ (2007). Findlaw.com. Retrieved 2007-04-30. ("If the intact D&E procedure is truly necessary in some circumstances, it appears likely an injection that kills the fetus is an alternative under the Act that allows the doctor to perform the procedure.")
Chasen, Stephen T.; Kalish, Robin B.; Gupta, Meruka; Kaufman, Jane E.; Rashbaum, William K.; Chervenak, Frank A. (2004). "Dilation and evacuation at >or=20 weeks: comparison of operative techniques". American Journal of Obstetrics and Gynecology. 190 (5): 1180–1183. doi:10.1016/j.ajog.2003.12.034. ISSN0002-9378. PMID15167815.
Chasen, Stephen T.; Kalish, Robin B.; Gupta, Meruka; Kaufman, Jane; Chervenak, Frank A. (2005). "Obstetric outcomes after surgical abortion at > or = 20 weeks' gestation". American Journal of Obstetrics and Gynecology. 193 (3 Pt 2): 1161–1164. doi:10.1016/j.ajog.2005.05.078. ISSN0002-9378. PMID16157130.
Chasen, Stephen T.; Kalish, Robin B.; Gupta, Meruka; Kaufman, Jane E.; Rashbaum, William K.; Chervenak, Frank A. (2004). "Dilation and evacuation at >or=20 weeks: comparison of operative techniques". American Journal of Obstetrics and Gynecology. 190 (5): 1180–1183. doi:10.1016/j.ajog.2003.12.034. ISSN0002-9378. PMID15167815.
Chasen, Stephen T.; Kalish, Robin B.; Gupta, Meruka; Kaufman, Jane; Chervenak, Frank A. (2005). "Obstetric outcomes after surgical abortion at > or = 20 weeks' gestation". American Journal of Obstetrics and Gynecology. 193 (3 Pt 2): 1161–1164. doi:10.1016/j.ajog.2005.05.078. ISSN0002-9378. PMID16157130.