@article{ITA_1978__12_2_149_0,
     author = {Acz\'el, J. and Dar\'oczy, Z.},
     title = {A mixed theory of information. {I} : symmetric, recursive and measurable entropies of randomized systems of events},
     journal = {RAIRO. Informatique th\'eorique},
     pages = {149--155},
     publisher = {EDP-Sciences},
     volume = {12},
     number = {2},
     year = {1978},
     mrnumber = {490441},
     zbl = {0382.94012},
     language = {en},
     url = {http://www.numdam.org/item/ITA_1978__12_2_149_0/}
}