@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/