7Laurence H. Tribe, The Abortion Funding Conundrum : Inalienable Rights, Affirmative Duties, and the Dilemma of Dependence,Harvard Law Review 99 (1985), p.332 - 336.
8Sabine Michalowski and Loma Woods. German Constitutional Law: The Protection of Civil Liberties [M]. Aldershot and Brookfield: Ashgate Publishing Company and Dartmouth Publishing Company, 1999.
9Gerald L. Neuman. Casey in the Mirror: Abortion, Abuse and the Right to Protection in the United States and Germany [J].American Journal of Comparative Law , 1995, (43)