Zerle-Elsäßer, C., and X. Li. “Väter Im Familienalltag – Determinanten Einer Aktiven Vaterschaft: Fathers in Everyday Family Life – Determinants of an ‘active fatherhood’”. Journal of Family Research, vol. 29, no. 1, Apr. 2017, pp. p. 11-31, doi:10.3224/zff.v29i1.01.