@article{1183739041,
author = {Lukas, Joan D. and Putnam, Hilary},
title = {Systems of Notations and the Ramified Analytical Hierarchy},
journal = {J. Symbolic Logic},
volume = {39},
number = {1},
year = {1974},
pages = { 243-253},
language = {en},
url = {http://dml.mathdoc.fr/item/1183739041}
}
Lukas, Joan D.; Putnam, Hilary. Systems of Notations and the Ramified Analytical Hierarchy. J. Symbolic Logic, Tome 39 (1974) no. 1, pp. 243-253. http://gdmltest.u-ga.fr/item/1183739041/