Markevich, B. O. “Discriminant Models the Possibility of Primary Dysmenorrhea Appearing in Girls 14-18 Years Depending on the Feature S Sizes Body or Sonographic Parameters Uterus and Ovaries and Hormonal Background in Differ Entphases of the Menstrual Cycle”. Biomedical and Biosocial Anthropology0, no. 28 (March 31, 2017): 59-63. Accessed December 5, 2021.