@article{1102702809,
author = {Wente, Henry C.},
title = {Counterexample to a conjecture of H. Hopf.},
journal = {Pacific J. Math.},
volume = {125},
number = {2},
year = {1986},
pages = { 193-243},
language = {en},
url = {http://dml.mathdoc.fr/item/1102702809}
}
Wente, Henry C. Counterexample to a conjecture of H. Hopf.. Pacific J. Math., Tome 125 (1986) no. 2, pp. 193-243. http://gdmltest.u-ga.fr/item/1102702809/