1. Indonesian Family Planning Program;USAID,1984
2. A comparative study of the Copper 7 and the Lippes Loop intrauterine device among Sundanese women;Gerais,1983
3. The new ParaGard Copper T 380A intrauterine device;Tatum;Medical Digest,1989
4. IUD's, A new look;Treiman;Population Reports,1988
5. Standardization of cumulative failure rates;Herson;Demography,1975