@article{JRAM_1978__0299_0300_151983,
     author = {Takao Sasai},
     title = {On a monodromy group and irreducibility conditions of a fourth order {Fuchsian} differential system of {Okubo} type.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {38--50},
     publisher = {mathdoc},
     volume = {0299_0300},
     year = {1978},
     zbl = {0367.35049},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1978__0299_0300_151983/}
}