Keyfitz, Nathan The profile of intercohort increase. (English) Zbl 0875.92060 Math. Popul. Stud. 2, No. 2, 105-117 (1990). MSC: 91D20 PDFBibTeX XMLCite \textit{N. Keyfitz}, Math. Popul. Stud. 2, No. 2, 105--117 (1990; Zbl 0875.92060) Full Text: DOI Link
Keyfitz, Nathan A Markov chain for calculating the durability of marriage. (English) Zbl 0900.92121 Math. Popul. Stud. 1, No. 1, 101-121 (1988). MSC: 92D25 62P25 PDFBibTeX XMLCite \textit{N. Keyfitz}, Math. Popul. Stud. 1, No. 1, 101--121 (1988; Zbl 0900.92121) Full Text: DOI