@article{10_4171_dm_112,
     author = {Gr\'egory Berhuy and David B. Leep},
     title = {Divisible subgroups of {Brauer} groups and trace forms of central simple algebras},
     journal = {Documenta mathematica},
     pages = {489--500},
     year = {2001},
     volume = {6},
     doi = {10.4171/dm/112},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/112/}
}