@article{10_21136_CMJ_1984_101927,
     author = {Sizer, Walter S.},
     title = {Representations of group and semigroup actions},
     journal = {Czechoslovak Mathematical Journal},
     pages = {84--91},
     publisher = {mathdoc},
     volume = {34},
     number = {1},
     year = {1984},
     doi = {10.21136/CMJ.1984.101927},
     mrnumber = {731981},
     zbl = {0544.20057},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1984.101927/}
}