1. Weinberg, W. Zur Vererbung des Zwergwuchses. Arch. Rassen- u. Gesel. Biolog. 9, 710–718 ( 1912).In this paper, Weinberg first noted the importance of birth order, which led to the idea of the paternal age effect.
2. Crow, J. F. Hardy, Weinberg and language impediments. Genetics 152, 821–825 (1999).
3. Penrose, L. S. Parental age and mutation. Lancet 269, 312 –313 (1955).
4. Risch, N., Reigh, E. W., Wishnick, M. W. & McCarthy, J. G. Spontaneous mutation and parental age in humans. Am. J. Hum. Genet. 41, 218–248 ( 1987).A detailed review and analysis of the classical literature on the paternal age effect.
5. Haldane, J. B. S. The mutation rate of the gene for hemophilia and its segregation ratios in males and females. Ann. Eugen. 13, 262– 271 (1947).The first measurement of a human mutation rate, as well as evidence for a higher male rate.