@article{GDZPPN002052180,
title = {Die geometrische Theorie der rationalen Transformation der hypergeometrischen Differentialgleichung.},
journal = {Commentarii mathematici Helvetici},
volume = {9},
year = {1936},
pages = {51-76},
zbl = {0015.06702},
url = {http://dml.mathdoc.fr/item/GDZPPN002052180}
}
Matthieu, P. Die geometrische Theorie der rationalen Transformation der hypergeometrischen Differentialgleichung.. Commentarii mathematici Helvetici, Tome 9 (1936) pp. 51-76. http://gdmltest.u-ga.fr/item/GDZPPN002052180/