1. Birth under water;Odent;Lancet,1983
2. Water immersion and the effect on labor;Schorn;J. Nurse Midwifery,1993
3. Water birth: the newest form of safe, gentle, joyous birth;Daniels;J. Nurse Midwifery,1989
4. Retrospective comparative study of water birth and bedbirth;Burke;Midwives Journal,1995
5. Waterbirths: a comparative study. A prospective study on more than 2000 waterbirths;Geissbuhler;Fetal. Diagn. Ther.,2000