@article{GDZPPN002194708,
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},
volume = {302},
year = {1978},
pages = {38-50},
zbl = {0367.35049},
url = {http://dml.mathdoc.fr/item/GDZPPN002194708}
}
Sasai, Takao. On a monodromy group and irreducibility conditions of a fourth order Fuchsian differential system of Okubo type.. Journal für die reine und angewandte Mathematik, Tome 302 (1978) pp. 38-50. http://gdmltest.u-ga.fr/item/GDZPPN002194708/