@article{ITA_1979__13_1_87_0,
     author = {Breitbart, Y. and Lewis, F. D.},
     title = {Combined complexity classes for finite functions},
     journal = {RAIRO. Informatique th\'eorique},
     pages = {87--97},
     publisher = {EDP-Sciences},
     volume = {13},
     number = {1},
     year = {1979},
     mrnumber = {525459},
     zbl = {0414.68023},
     language = {en},
     url = {http://www.numdam.org/item/ITA_1979__13_1_87_0/}
}