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@article{MZ_1984__186_173438, author = {Gerhard Str\"ohmer}, title = {Unstable {Solutions} of the {Euler} {Equations} of {Certain} {Variational} {Problems.}}, journal = {Mathematische Zeitschrift}, pages = {179--200}, publisher = {mathdoc}, volume = {186}, year = {1984}, zbl = {0533.58010}, url = {http://geodesic.mathdoc.fr/item/MZ_1984__186_173438/} }
Gerhard Ströhmer. Unstable Solutions of the Euler Equations of Certain Variational Problems.. Mathematische Zeitschrift, Tome 186 (1984), pp. 179-200. http://geodesic.mathdoc.fr/item/MZ_1984__186_173438/