@techreport{iiasa13372,
           month = {November},
            type = {IIASA Working Paper},
           title = {Regional demoeconomic growth. A survey of theories and empirical models},
         address = {IIASA, Laxenburg, Austria},
       publisher = {WP-78-051},
            year = {1978},
             url = {https://pure.iiasa.ac.at/id/eprint/13372/},
          author = {Ledent, J.}
}