Liu, J., Rotkirch, A., & Lummaa, V. (2012). Maternal Risk of Breeding Failure Remained Low throughout the Demographic Transitions in Fertility and Age at First Reproduction in Finland. Public Library of Science.

Liu, Jianghua, Anna Rotkirch, و Virpi Lummaa. Maternal Risk of Breeding Failure Remained Low Throughout the Demographic Transitions in Fertility and Age At First Reproduction in Finland. Public Library of Science, 2012.

Liu, Jianghua, Anna Rotkirch, و Virpi Lummaa. Maternal Risk of Breeding Failure Remained Low Throughout the Demographic Transitions in Fertility and Age At First Reproduction in Finland. Public Library of Science, 2012.