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Supported partly by the Sonderforschungsbereich “Theoretische Mathematik” at the University of Bonn and partly by a grant from the Research Council of the Graduate School, University of Missouri-Columbia.
Supported by the Swiss National Science Foundation and the Sonderforschungsbereich “Theoretische Mathematik” at the University of Bonn.
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Ehrlich, P.E., Hof, HC.I. Dirichlet regions in manifolds without conjugate points. Commentarii Mathematici Helvetici 54, 642–658 (1979). https://doi.org/10.1007/BF02566298
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DOI: https://doi.org/10.1007/BF02566298