@techreport{iiasa4140,
           month = {August},
            type = {IIASA Working Paper},
           title = {Nonlinear Problems in Mathematical Ecology},
         address = {IIASA, Laxenburg, Austria},
       publisher = {WP-94-071},
            year = {1994},
             url = {https://pure.iiasa.ac.at/id/eprint/4140/},
          author = {Svirezhev, Y. M.}
}