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@article{MZ_1974__140_172145, author = {James E. jr. Arnold}, title = {Chain {Equivalences} and {Schanuel's} {Lemma.}}, journal = {Mathematische Zeitschrift}, pages = {245--254}, publisher = {mathdoc}, volume = {140}, year = {1974}, zbl = {0291.55020}, url = {http://geodesic.mathdoc.fr/item/MZ_1974__140_172145/} }
James E. jr. Arnold. Chain Equivalences and Schanuel's Lemma.. Mathematische Zeitschrift, Tome 140 (1974), pp. 245-254. http://geodesic.mathdoc.fr/item/MZ_1974__140_172145/