@article{MAN_1983__265_163819, author = {Kamil John}, title = {Counterexample to a {Conjecture} of {Grothendieck.}}, journal = {Mathematische Annalen}, pages = {169--180}, publisher = {mathdoc}, volume = {265}, year = {1983}, zbl = {0506.46053}, url = {http://geodesic.mathdoc.fr/item/MAN_1983__265_163819/} }