@article{ITA_1987__21_2_175_0,
     author = {Tor\'an, Jacobo},
     title = {On the complexity of computable real sequences},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {175--180},
     publisher = {EDP-Sciences},
     volume = {21},
     number = {2},
     year = {1987},
     mrnumber = {894709},
     zbl = {0634.68032},
     language = {en},
     url = {http://www.numdam.org/item/ITA_1987__21_2_175_0/}
}