1. Use of cervical cap to increase fertility in cases of oligospermia;Whitelaw;Fertil Steril,1950
2. Die homolge kunstliche insemination;Doering;Gynakologe,1971
3. Hysterosalpingography and insufflation (a 35 year clinical study);Whitelaw;J Reprod Med,1970
4. Use of nitroglycerin in hysterosalpingography (abstr);Whitelaw;Fertil Steril,1977