1. Depression of the progesterone levels in plasma in women treated with synthetic gestagens after ovulation;Johansson;Acta endocr. (Kbh.),1971
2. Large doses of progestional steroids in the luteal phase;Johansson,1973
3. Postovulatory contraception in women with large doses of norethindrone;Nygren;Contraception,1972
4. Nygren, K.G., Johansson, E.D.B. and Wide, L. Contraceptive efficacy of norethindrone given between ovulation and implantation. (In preparation)
5. Estradiol induced luteal regression in unilaterally hysterectomised and luteinizing hormone treated ewes;Akbar;J. Anim. Sci.,1971