@article{1183736196,
author = {Richter, Wayne},
title = {Constructively Accessible Ordinal Numbers},
journal = {J. Symbolic Logic},
volume = {33},
number = {1},
year = {1968},
pages = { 43-55},
language = {en},
url = {http://dml.mathdoc.fr/item/1183736196}
}
Richter, Wayne. Constructively Accessible Ordinal Numbers. J. Symbolic Logic, Tome 33 (1968) no. 1, pp. 43-55. http://gdmltest.u-ga.fr/item/1183736196/