Mueller VA (March 1950). "An analysis and evaluation of vinbarbital sodium for obstetric amnesia and analgesia". American Journal of Obstetrics and Gynecology. 59 (3): 679–84. doi:10.1016/0002-9378(50)90253-5. PMID15405833.
Mueller VA (March 1950). "An analysis and evaluation of vinbarbital sodium for obstetric amnesia and analgesia". American Journal of Obstetrics and Gynecology. 59 (3): 679–84. doi:10.1016/0002-9378(50)90253-5. PMID15405833.