@article{GDZPPN002486253,
title = {Schwach irreduzible Markoff-Operatoren.},
journal = {Monatshefte f\"ur Mathematik},
volume = {105},
year = {1988},
pages = {319-334},
zbl = {0641.47038},
url = {http://dml.mathdoc.fr/item/GDZPPN002486253}
}
Wittmann, Rainer. Schwach irreduzible Markoff-Operatoren.. Monatshefte für Mathematik, Tome 105 (1988) pp. 319-334. http://gdmltest.u-ga.fr/item/GDZPPN002486253/