@article{RCM_1975__9_181643,
     author = {Steven M. Moore},
     title = {An algebraic formulation of ergodic problems},
     journal = {Revista colombiana de matematicas},
     pages = {189--204},
     publisher = {mathdoc},
     volume = {9},
     year = {1975},
     zbl = {0331.46056},
     url = {http://geodesic.mathdoc.fr/item/RCM_1975__9_181643/}
}