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Vorgelegt von J. C. C. Nitsche
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Ströhmer, G. Instabile Lösungen der Eulerschen Gleichungen gewisser variationsprobleme. Arch. Rational Mech. Anal. 79, 219–239 (1982). https://doi.org/10.1007/BF00251904
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DOI: https://doi.org/10.1007/BF00251904