@article{GDZPPN002324261, title = {Counterexample to a Conjecture of Grothendieck.}, journal = {Mathematische Annalen}, volume = {264}, year = {1983}, pages = {169-180}, zbl = {0506.46053}, url = {http://dml.mathdoc.fr/item/GDZPPN002324261} }
John, Kamil. Counterexample to a Conjecture of Grothendieck.. Mathematische Annalen, Tome 264 (1983) pp. 169-180. http://gdmltest.u-ga.fr/item/GDZPPN002324261/