@article{1178228027, author = {Okayasu, Takashi}, title = {Pinching and nonexistence of stable harmonic maps}, journal = {Tohoku Math. J. (2)}, volume = {40}, number = {4}, year = {1988}, pages = { 213-220}, language = {en}, url = {http://dml.mathdoc.fr/item/1178228027} }
Okayasu, Takashi. Pinching and nonexistence of stable harmonic maps. Tohoku Math. J. (2), Tome 40 (1988) no. 4, pp. 213-220. http://gdmltest.u-ga.fr/item/1178228027/