@article{HHA_2010_12_2_a6,
     author = {Sebastian Thomas},
     title = {On the second cohomology group of a simplicial group},
     journal = {Homology, homotopy, and applications},
     pages = {167--210},
     publisher = {mathdoc},
     volume = {12},
     number = {2},
     year = {2010},
     doi = {10.4310/HHA.2010.v12.n2.a6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4310/HHA.2010.v12.n2.a6/}
}