@article{iiasa13595,
          volume = {709},
          number = {1},
           month = {February},
           title = {Influence of Human Reproduction on Environmenta},
         journal = {Annals of the New York Academy of Sciences},
             doi = {10.1111/j.1749-6632.1994.tb30420.x},
           pages = {331--346},
            year = {2006},
             url = {https://pure.iiasa.ac.at/id/eprint/13595/},
            issn = {00778923},
          author = {Keyfitz, N.}
}