1. Aboulghar MM. Chapter 20: Ultrasound monitoring for ovulation induction: pitfalls and problems. In: Ovarian stimulation. Cambridge: Cambridge University Press; 2009. Online publication. ISBN 9780511762390.
2. Pierson RA, Olatunbosun OA, et al. Transvaginal ultrasonography and the evaluation of female infertility. In: Sciarra JJ, editor. Gynecology and obstetrics, vol. 5. Saskatoon: University of Saskatchewan; 2004. p. 1–12.
3. Blankstein J, Arora S, Brasch J. Ultrasound to monitor ovulation induction. In: Rizk B, Puschek E, editors. Ultrasonography in gynecology. Cambridge University Press. [In press].
4. Baerwald A, Walker R, Pierson R. Growth rate of ovarian follicles during natural menstrual cycles, oral contraceptives cycles and ovarian stimulation cycles. Fertil Steril. 2009;91(2):440–9.
5. Palatnik A, Strawn E, Szabo A, Robb P. What is the optimal follicular size before triggering ovulation in intrauterine insemination cycles with clomiphene citrate or letrozole? Fertil Steril. 2012;97(5):1089–94. e1–3.