@article{1183734580,
author = {Feferman, S. and Spector, C.},
title = {Incompleteness Along Paths in Progressions of Theories},
journal = {J. Symbolic Logic},
volume = {27},
number = {1},
year = {1962},
pages = { 383-390},
language = {en},
url = {http://dml.mathdoc.fr/item/1183734580}
}
Feferman, S.; Spector, C. Incompleteness Along Paths in Progressions of Theories. J. Symbolic Logic, Tome 27 (1962) no. 1, pp. 383-390. http://gdmltest.u-ga.fr/item/1183734580/