@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/