@incollection{AST_1977__50__239_0,
     author = {Lasota, A.},
     title = {Ergodic problems in biology},
     booktitle = {Syst\`emes dynamiques II - Varsovie},
     series = {Ast\'erisque},
     pages = {239--250},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {50},
     year = {1977},
     mrnumber = {490015},
     zbl = {0388.92009},
     language = {en},
     url = {http://archive.numdam.org/item/AST_1977__50__239_0/}
}