1. Høgh E, Wolf P. Project Metropolitan: A longitudinal study Of 12,270 boys from the metropolitan area of Copenhagen, Denmark, 1953-1977. In: Mednick S, Baert A, Bachmann B (eds). Prospective Longitudinal Research. An Emperical Basis for the Primary Prevention of Psychosocial Disorders. Oxford: Oxford University Press, 1981, pp. 101–03.
2. Osler M, Nybo Andersen A-M, Lund R et al. Revitalising the Metropolit 1953 Danish male birth cohort: background, aims and some preliminary findings. Paediatr Perinat Epidemiol2004;18:385–94.
3. Wolf P. Delinquent boys and family relations. Social Science Series. Vol. 1. Copenhagen: Micro Publications, 1984.
4. Høgh E, Strande-Sørensen G, Wolf P. Registered delinquency in a birth cohort. A longitudinal study. Project Metropolitan, Copenhagen/Denmark 1953–1978. Sociologic MicroJ1983;17.
5. Osler M, Nybo Andersen A-M, Due P, Lund R, Trab Damsgaard M, Holstein B. Socio-economic position during childhood, birth weight, childhood cognitive function and mortality in adult life. A longitudinal study of Danish men born in 1953. J Epidemiol Community Health2003;57:681–86.