@article{OertelBung2015,
  author    = {Oertel, Mario and Bung, Daniel Bernhard},
  title     = {Stability and scour development of bed material on crossbar block ramps},
  series = {International journal of sediment research},
  volume    = {30},
  journal   = {International journal of sediment research},
  number    = {4},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1001-6279},
  doi       = {10.1016/j.ijsrc.2014.12.003},
  pages     = {344 -- 350},
  year      = {2015},
  abstract  = {Block ramps are ecologically oriented drop structures with adequate energy dissipation and partially moderate flow velocities. A special case is given with crossbar block ramps, where the upstream and downstream level difference is reduced by a series of basins. To prevent the total structure from failing, the stability of single boulders within the crossbars and the bed material in between must be guaranteed. The present paper addresses the stability of bed material and scour development for various flow regimes. Any bed material erosion may affect the stability of the crossbar boulders, which in turn can result in major damages of the ramp. Therefore new design approaches are developed to choose an appropriate bed material size and to avoid failures of crossbar block ramp structures.},
  language  = {en}
}
@article{OertelBung2015,
  author    = {Oertel, Mario and Bung, Daniel Bernhard},
  title     = {Numerische Str{\"o}mungssimulationen von Fließgew{\"a}ssern : Praxisanwendungen und zuk{\"u}nftige Entwicklungen},
  series = {Korrespondenz Wasserwirtschaft : KW},
  volume    = {8},
  journal   = {Korrespondenz Wasserwirtschaft : KW},
  number    = {H. 3},
  publisher = {Gesellschaft zur F{\"o}rderung der Abwassertechnik},
  address   = {Hennef},
  issn      = {1616-430X},
  pages     = {177 -- 182},
  year      = {2015},
  language  = {de}
}
@article{Olbertz2015,
  author    = {Olbertz, Klaus},
  title     = {Abschlagsfreie Rente mit 63 - Die wichtigsten Fragestellungen und L{\"o}sungen f{\"u}r die Praxis},
  series = {NWB - Steuer- und Wirtschaftsrecht},
  journal   = {NWB - Steuer- und Wirtschaftsrecht},
  number    = {15},
  publisher = {NWB Verlag},
  address   = {Herne},
  issn      = {1860-9449},
  pages     = {1263 -- 1270},
  year      = {2015},
  language  = {de}
}
@book{Olbertz2015,
  author    = {Olbertz, Klaus},
  title     = {Rente mit 63 : Voraussetzungen, Hinzuverdienstgrenzen, Abschl{\"a}ge, Auswirkungen},
  publisher = {nwb},
  address   = {Herne},
  isbn      = {978-3-482-66171-6},
  pages     = {35 S. : graph. Darst.},
  year      = {2015},
  language  = {de}
}
@misc{Olbertz2015,
  author    = {Olbertz, Klaus},
  title     = {Geltung eines Haustarifvertrages nach Verschmelzung nur im bisherigen Anwendungsbereich},
  series = {Gesellschafts- und Wirtschaftsrecht : GWR},
  journal   = {Gesellschafts- und Wirtschaftsrecht : GWR},
  issn      = {1868-1816},
  pages     = {86 -- 86},
  year      = {2015},
  language  = {de}
}
@misc{Olbertz2015,
  author    = {Olbertz, Klaus},
  title     = {Formularm{\"a}ßiger Verzicht auf die Erhebung einer K{\"u}ndigungsschutzklage ohne Kompensation verst{\"o}ßt gegen \S 307 I 1 BGB},
  series = {Gesellschafts- und Wirtschaftsrecht : GWR},
  journal   = {Gesellschafts- und Wirtschaftsrecht : GWR},
  issn      = {1868-1816},
  pages     = {146 -- 146},
  year      = {2015},
  language  = {de}
}
@misc{Olbertz2015,
  author    = {Olbertz, Klaus},
  title     = {Erg{\"a}nzende Vertragsauslegung bei nachtr{\"a}glicher Regelungsl{\"u}cke in Verg{\"u}tungsabrede wegen Tarifsukzession},
  series = {Gesellschafts- und Wirtschaftsrecht : GWR},
  journal   = {Gesellschafts- und Wirtschaftsrecht : GWR},
  issn      = {1868-1816},
  pages     = {392 -- 392},
  year      = {2015},
  language  = {de}
}
@misc{Olbertz2015,
  author    = {Olbertz, Klaus},
  title     = {F{\"u}r Erfordernis einer Massenentlassungsanzeige z{\"a}hlen vom Arbeitgeber veranlasste Aufhebungsvertr{\"a}ge mit},
  series = {Gesellschafts- und Wirtschaftsrecht : GWR},
  journal   = {Gesellschafts- und Wirtschaftsrecht : GWR},
  issn      = {1868-1816},
  pages     = {372 -- 372},
  year      = {2015},
  language  = {de}
}
@misc{Olbertz2015,
  author    = {Olbertz, Klaus},
  title     = {{\"A}nderung einer betrieblichen Versorgungsregelung aufgrund wirtschaftlicher Schwierigkeiten im Konzern},
  issn      = {1868-1816},
  pages     = {173 -- 173},
  year      = {2015},
  language  = {de}
}
@misc{Olbertz2015,
  author    = {Olbertz, Klaus},
  title     = {Eingruppierung von Arbeitnehmern bei Tarifpluralit{\"a}t},
  series = {Gesellschafts- und Wirtschaftsrecht : GWR},
  journal   = {Gesellschafts- und Wirtschaftsrecht : GWR},
  issn      = {1868-1816},
  pages     = {414 -- 414},
  year      = {2015},
  language  = {de}
}