Żądzińska, Elżbieta, Iwona Rosset, Czesław Domański, Bogusław Pawłowski, and Artur Mikulec. “Can Economic Stress Affect Secondary Sex Ratio in Poland?”. Anthropological Review 70 (December 30, 2007): 15–27. Accessed April 16, 2024. https://czasopisma.uni.lodz.pl/ar/article/view/12049.