@article{1093888522,
author = {Hickman, John L.},
title = {Commutativity of generalized ordinals.},
journal = {Notre Dame J. Formal Logic},
volume = {19},
number = {1},
year = {1978},
pages = { 702-704},
language = {en},
url = {http://dml.mathdoc.fr/item/1093888522}
}
Hickman, John L. Commutativity of generalized ordinals.. Notre Dame J. Formal Logic, Tome 19 (1978) no. 1, pp. 702-704. http://gdmltest.u-ga.fr/item/1093888522/