@article{GDZPPN002091623,
title = {Zur Transitivit\"at der normalen Flachheit.},
journal = {Inventiones mathematicae},
volume = {29},
year = {1975},
pages = {129-136},
zbl = {0278.14008},
url = {http://dml.mathdoc.fr/item/GDZPPN002091623}
}
Herrmann, Manfred; Schmidt, Rolf. Zur Transitivität der normalen Flachheit.. Inventiones mathematicae, Tome 29 (1975) pp. 129-136. http://gdmltest.u-ga.fr/item/GDZPPN002091623/