@article{GDZPPN002097338,
title = {An Obstruction to the Existence of Affine Structures.},
journal = {Inventiones mathematicae},
volume = {64},
year = {1981},
pages = {411-416},
zbl = {0485.57015},
url = {http://dml.mathdoc.fr/item/GDZPPN002097338}
}
Smillie, John. An Obstruction to the Existence of Affine Structures.. Inventiones mathematicae, Tome 64 (1981) pp. 411-416. http://gdmltest.u-ga.fr/item/GDZPPN002097338/