@incollection{AST_1977__50__283_0,
     author = {Marczy\'nska, B.},
     title = {On a generalization of topological conditional entropy},
     booktitle = {Syst\`emes dynamiques II - Varsovie},
     series = {Ast\'erisque},
     pages = {283--292},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {50},
     year = {1977},
     mrnumber = {487997},
     zbl = {0376.54018},
     language = {en},
     url = {http://www.numdam.org/item/AST_1977__50__283_0/}
}