@article{1225113732, author = {GOUDA, Norio}, title = {The theorem of E. Hopf under uniform magnetic fields}, journal = {J. Math. Soc. Japan}, volume = {50}, number = {4}, year = {1998}, pages = { 767-779}, language = {en}, url = {http://dml.mathdoc.fr/item/1225113732} }
GOUDA, Norio. The theorem of E. Hopf under uniform magnetic fields. J. Math. Soc. Japan, Tome 50 (1998) no. 4, pp. 767-779. http://gdmltest.u-ga.fr/item/1225113732/