@article{GDZPPN002400545,
title = {A Generalization of Andr\'e's Systems.},
journal = {Mathematische Zeitschrift},
volume = {99},
year = {1967},
pages = {380-395},
zbl = {0152.18903},
url = {http://dml.mathdoc.fr/item/GDZPPN002400545}
}
Foulser, David A. A Generalization of André's Systems.. Mathematische Zeitschrift, Tome 99 (1967) pp. 380-395. http://gdmltest.u-ga.fr/item/GDZPPN002400545/