@article{GDZPPN002438690, title = {Index and stability of harmonic Gauss maps.}, journal = {Mathematische Zeitschrift}, volume = {207}, year = {1991}, pages = {563-566}, zbl = {0727.58011}, url = {http://dml.mathdoc.fr/item/GDZPPN002438690} }
Palmer, Bennett. Index and stability of harmonic Gauss maps.. Mathematische Zeitschrift, Tome 207 (1991) pp. 563-566. http://gdmltest.u-ga.fr/item/GDZPPN002438690/