@article{JEMS_2010_12_1_a0,
     author = {Filippo Callegaro and Davide Moroni and Mario Salvetti},
     title = {The $K(\pi,1)$ problem for the affine {Artin} group of type $\widetilde{B}_n$ and its cohomology},
     journal = {Journal of the European Mathematical Society},
     pages = {1--22},
     publisher = {mathdoc},
     volume = {12},
     number = {1},
     year = {2010},
     doi = {10.4171/jems/187},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/187/}
}