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Karen Oppenheim Mason, William M. Mason, H. H. Winsborough, W. Kenneth Poole, Certaines questions méthodologiques dans l'analyse de cohorte des données archivées, American Sociological Review, Vol. 38, No. 2 (avr., 1973), pp. 242-258
Mason et al. (Sun,) ont étudié cette question.
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