@article{ITA_1981__15_1_67_0,
     author = {Dikovskii, A. Ja.},
     title = {A theory of complexity of monadic recursion schemes},
     journal = {RAIRO. Informatique th\'eorique},
     pages = {67--94},
     publisher = {EDP-Sciences},
     volume = {15},
     number = {1},
     year = {1981},
     mrnumber = {610946},
     zbl = {0469.68050},
     language = {en},
     url = {http://www.numdam.org/item/ITA_1981__15_1_67_0/}
}