@article{GDZPPN002101068,
title = {Zum Periodenproblem.},
journal = {Inventiones mathematicae},
volume = {75},
year = {1984},
pages = {381-392},
url = {http://dml.mathdoc.fr/item/GDZPPN002101068}
}
Wüstholz, G. Zum Periodenproblem.. Inventiones mathematicae, Tome 75 (1984) pp. 381-392. http://gdmltest.u-ga.fr/item/GDZPPN002101068/