@article{MZ_1971__123_171617,
     author = {Gunter Seim},
     title = {Die {Klassifikation} der {Zust\"ande} bei inhomogenen {Markoffschen} {Ketten.}},
     journal = {Mathematische Zeitschrift},
     pages = {21--31},
     publisher = {mathdoc},
     volume = {123},
     year = {1971},
     zbl = {0212.20404},
     url = {http://geodesic.mathdoc.fr/item/MZ_1971__123_171617/}
}