Bożiłow, W., Sawicki, K., Poradnik, E., Kuriej, W. and Gworys, B. (1992) “Variability Of Weight In The Prenatal And Perinatal Stages Of Development”, Anthropological Review, 55(1-2), pp. 45–55. doi: 10.18778/1898-6773.55.1-2.04.