V. Dreyer

Colour vision deficiency in one of two presumably monozyǵotic twins with secondary amenorrhoea

A. Svejgaard, H. Gürtler, M. Hauge, 1969, Annals of human genetics.

The decentred ego in a non-local world: From power to will

V. Dreyer, 2005 .

Different patterns of X inactivation in MZ twins discordant for red-green color-vision deficiency.

A. Motulsky, W. Raskind, A. L. Jørgensen, 1992, American journal of human genetics.