@article{01627577,
title = {Homotopy classes that are trivial mod },
journal = {Geometry \& Topology},
volume = {5},
year = {2001},
pages = {381-409},
doi = {10.2140/agt.2001.1.381},
zbl = {0982.55009},
language = {en},
url = {http://dml.mathdoc.fr/item/01627577}
}
Arkowitz, Martin; Strom, Jeffrey. Homotopy classes that are trivial mod . Geometry & Topology, Tome 5 (2001) pp. 381-409. doi : 10.2140/agt.2001.1.381. http://gdmltest.u-ga.fr/item/01627577/