Zar, A., Alavi, S., Ahmadi, F., Rezaie, F., & Mirghaderi, F. "Effects of physical activity and exercise on sleep quality in postmenopausal women", The Iranian Journal of Obstetrics, Gynecology and Infertility, 20, 4, 2017, 19-24. doi: 10.22038/ijogi.2017.8977