@article{iiasa13645,
          volume = {12},
          number = {supp},
           title = {The family that does not reproduce itself.},
       publisher = {Wiley-Blackwell},
            year = {1986},
           pages = {139--154},
         journal = {Population and Development Review},
             url = {https://pure.iiasa.ac.at/id/eprint/13645/},
            issn = {1728-4457},
        abstract = {It is easy to invent models that will account for the low level of births in the late 20th century including earlier ignorance of birth control; high women's wages; and female liberation. All these assertions are true, and so also are other considerations. The interplay of causes is what now needs study.},
          author = {Keyfitz, N.}
}