@article{1183735111,
author = {Richter, Wayne},
title = {Extensions of the Constructive Ordinals},
journal = {J. Symbolic Logic},
volume = {30},
number = {1},
year = {1965},
pages = { 193-211},
language = {en},
url = {http://dml.mathdoc.fr/item/1183735111}
}
Richter, Wayne. Extensions of the Constructive Ordinals. J. Symbolic Logic, Tome 30 (1965) no. 1, pp. 193-211. http://gdmltest.u-ga.fr/item/1183735111/