@article{bwmeta1.element.bwnjournal-article-fmv36i1p12,
author = {Alfred Tarski},
title = {Cancellation laws in the arithmetic of cardinals},
journal = {Fundamenta Mathematicae},
volume = {36},
year = {1949},
pages = {77-92},
zbl = {0039.04804},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv36i1p12}
}
Tarski, Alfred. Cancellation laws in the arithmetic of cardinals. Fundamenta Mathematicae, Tome 36 (1949) pp. 77-92. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv36i1p12/