1. Measurement of the ovarian follicle by ultrasound in ovulation induction;Ylöstalo;Fertil Steril,1979
2. Ultrasound monitoring of ovulation;Renaud;Lancet,1979
3. Ultraschalldarstellung des Wachsenden Follikels und Corpus Luteum im Normalen Physiologischen Zyklus;Hackeloer;Geburtschilfe Frauenheilkd,1978
4. Correlation of ultrasonic and endocrinologic assessment of human follicular development;Hackeloer;Am J Obstet Gynecol,1979
5. Assessment of ovulation by ultrasound and plasma estradiol determinations;Robertson;Obstet Gynecol,1979