Рудаева, Елена Владимировна, and Галина Александровна Ушакова. “GRAVIDARY HOMEOSTASIS IN PREGNANT WOMEN WITH UNDERWEIGHT”. Mother and Baby in Kuzbass, vol. 18, no. 3, Aug. 2017, pp. 43-49, https://www.mednauki.ru/index.php/MD/article/view/112.