@article{1183736307,
author = {Feferman, Solomon},
title = {Systems of Predicative Analysis, II: Representations of Ordinals},
journal = {J. Symbolic Logic},
volume = {33},
number = {1},
year = {1968},
pages = { 193-220},
language = {en},
url = {http://dml.mathdoc.fr/item/1183736307}
}
Feferman, Solomon. Systems of Predicative Analysis, II: Representations of Ordinals. J. Symbolic Logic, Tome 33 (1968) no. 1, pp. 193-220. http://gdmltest.u-ga.fr/item/1183736307/