1. Progestagens;Edgren,1980
2. Effects of two oral contraceptive combinations, 0.125 mg Desogestrel +0.050 mg Ethinylestradiol and 0.125 mg Levonorgestrel +0.05 mg Ethinylestradiol on the adrenal function of healthy female volunteers;Ruokonen;Eur. J. Obstet. Gynecol. Reprod. Biol.,1982
3. Development of an oral contraceptive containing a new pregestagen, desogestrel, and 30 pg ethinylestradiol. Report on clinical studies from Scandinavia,1982
4. The progestagenonly mini-pill;Graham;Contraception,1982