@article{02221867, title = {A stably free nonfree module and its relevance for homotopy classification, case }, journal = {Geometry \& Topology}, volume = {5}, year = {2005}, pages = {899-910}, doi = {10.2140/agt.2005.5.899}, zbl = {1084.57003}, language = {en}, url = {http://dml.mathdoc.fr/item/02221867} }
Beyl, F.Rudolf; Waller, Nancy. A stably free nonfree module and its relevance for homotopy classification, case . Geometry & Topology, Tome 5 (2005) pp. 899-910. doi : 10.2140/agt.2005.5.899. http://gdmltest.u-ga.fr/item/02221867/