@article{10_4171_ggd_138,
     author = {Joachim Schwermer},
     title = {Geometric cycles, {Albert} algebras and related cohomology classes for arithmetic groups},
     journal = {Groups, geometry, and dynamics},
     pages = {529--552},
     year = {2011},
     volume = {5},
     number = {2},
     doi = {10.4171/ggd/138},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/138/}
}