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@article{MAN_1983__262_163719, author = {E.N. Dancer}, title = {Breaking of {Symmetries} for {Forced} {Equations.}}, journal = {Mathematische Annalen}, pages = {473--486}, publisher = {mathdoc}, volume = {262}, year = {1983}, zbl = {0491.58012}, url = {http://geodesic.mathdoc.fr/item/MAN_1983__262_163719/} }
E.N. Dancer. Breaking of Symmetries for Forced Equations.. Mathematische Annalen, Tome 262 (1983), pp. 473-486. http://geodesic.mathdoc.fr/item/MAN_1983__262_163719/