@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/}
}