M. Meerum Terwogt, C. J. Meerum Terwogt-Reijnders, and S. M. J. van Hekken, “Identity problems related to an absent genetic father: Mit dem abwesenden Vater verbundene Identitätsprobleme ”, JFamRes, vol. 14, no. 3, pp. p. 257–271, Dec. 2002.