@article{MOMA_1977__84_177825, author = {K. Schmidt and K.R. Parthasarathy}, title = {On the {Cohomology} of a {Hyperfine} {Action.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {37--48}, publisher = {mathdoc}, volume = {84}, year = {1977}, zbl = {0384.28017}, url = {http://geodesic.mathdoc.fr/item/MOMA_1977__84_177825/} }