Sectional curvature of polygonal complexes with planar substructures

@article{Keller2014SectionalCO,
  title={Sectional curvature of polygonal complexes with planar substructures},
  author={Matthias Keller and Norbert Peyerimhoff and Felix Pogorzelski},
  journal={arXiv: Metric Geometry},
  year={2014}
}

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