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2. Metabolism and action of progestational steroids;Laumas,1974
3. Long-term contraception with subcutaneous implants;Laumas,1974
4. Long-term contraception by steroid-releasing implants. II. A preliminary report on long-term contraception by a single silastic implant containing norethindrone acetate (ENTA) in women;Bhatnagar;Contraception,1975
5. Srivastava, U.K. and Laumas, K.R.: Long-term contraception by steroid-releasing implants. V. Release rates and biological effects of norethindrone acetate administered by subcutaneous silastic implants in rats (in preparation).