@article{SM_1984_47_2_a13,
     author = {A. M. Vershik and S. I. Karpushev},
     title = {Cohomology of groups in unitary representations, the neighborhood of the identity, and conditionally positive definite functions},
     journal = {Sbornik. Mathematics},
     pages = {513--526},
     publisher = {mathdoc},
     volume = {47},
     number = {2},
     year = {1984},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1984_47_2_a13/}
}