@article{IM_1984__76_143113,
     author = {Klaus Schmidt and William Parry},
     title = {Natural coefficients and invariants for {Markov-shifts.}},
     journal = {Inventiones mathematicae},
     pages = {15--32},
     publisher = {mathdoc},
     volume = {76},
     year = {1984},
     zbl = {0563.28008},
     url = {http://geodesic.mathdoc.fr/item/IM_1984__76_143113/}
}