@article{10_2140_agt_2008_8_1,
     author = {Beyl, F Rudolf and Waller, Nancy},
     title = {Examples of exotic free 2{\textendash}complexes and stably free nonfree modules for quaternion groups},
     journal = {Algebraic and Geometric Topology},
     pages = {1--17},
     year = {2008},
     volume = {8},
     number = {1},
     doi = {10.2140/agt.2008.8.1},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2008.8.1/}
}