Copeland, J. R. M., Beekman, A. T. F., Dewey, M. E., Jordan, A., Lawlor, B. A., Linden, M., Lobo, A., Magnusson, H., Mann,
A. H., Fichter, M., Prince, M. J., Saz, P., Turrina, C., & Wilson, K. C. M. (1999).
Cross-cultural comparison of depressive symptoms in Europe does not support stereotypes of ageing.
British Journal of Psychiatry, 174, 322-329.