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@article{MAN_1992__293_4_164978, author = {J\"urgen Jost and Xiao-Wei Peng}, title = {Group actions, gauge transformations, and the calculus of variations.}, journal = {Mathematische Annalen}, pages = {595--622}, publisher = {mathdoc}, volume = {293}, number = {4}, year = {1992}, zbl = {0772.53011}, url = {http://geodesic.mathdoc.fr/item/MAN_1992__293_4_164978/} }
Jürgen Jost; Xiao-Wei Peng. Group actions, gauge transformations, and the calculus of variations.. Mathematische Annalen, Tome 293 (1992) no. 4, pp. 595-622. http://geodesic.mathdoc.fr/item/MAN_1992__293_4_164978/