@article{GDZPPN002415194,
title = {Chain Equivalences and Schanuel's Lemma.},
journal = {Mathematische Zeitschrift},
volume = {136},
year = {1974},
pages = {245-254},
zbl = {0291.55020},
url = {http://dml.mathdoc.fr/item/GDZPPN002415194}
}
Arnold, James E. jr. Chain Equivalences and Schanuel's Lemma.. Mathematische Zeitschrift, Tome 136 (1974) pp. 245-254. http://gdmltest.u-ga.fr/item/GDZPPN002415194/