@article{1183736769,
author = {Shapiro, N. Z.},
title = {Real Numbers and Functions in the Kleene Hierarchy and Limits of Recursive, Rational Functions},
journal = {J. Symbolic Logic},
volume = {34},
number = {1},
year = {1969},
pages = { 207-214},
language = {en},
url = {http://dml.mathdoc.fr/item/1183736769}
}
Shapiro, N. Z. Real Numbers and Functions in the Kleene Hierarchy and Limits of Recursive, Rational Functions. J. Symbolic Logic, Tome 34 (1969) no. 1, pp. 207-214. http://gdmltest.u-ga.fr/item/1183736769/