1. Clinical Investigation: A guide to its evaluation;Hines;Am J Obstet & Gynec,1969
2. The incidence of side-effects with oral or intrauterine contraceptives;Goldzieher;Am J Obstet & Gynec,1968
3. Clinical studies on oral contraceptives — a randomized double blind crossover study of 4 different preparations;Nilsson;Acta Obstet Gynec Scand,1967
4. Proceedings 5th Conf of Europe and Near East and Africa Region, International Planned Parenthood Fed;Richter,1967
5. Metabolic Effects of Gonadal Hormones and Contraceptive Steroids;Moos,1969