@article{BienerWemhoffBethke1995,
  author    = {Biener, Ernst and Wemhoff, T. and Bethke, H.},
  title     = {Stability and settlement problems based on the example of the Blockland landfill in Bremen},
  series = {Sardinia 95 : Fifth International Landfill Symposium ; (2 - 6 October 1995, S. Margheritadi Pula - Cagliari, Sardinia, Italy) ; proceedings / coord.: Thomas H. Christensen ... - Bd. 2 : Siting, lining, drainage \& landfill mechanics},
  journal   = {Sardinia 95 : Fifth International Landfill Symposium ; (2 - 6 October 1995, S. Margheritadi Pula - Cagliari, Sardinia, Italy) ; proceedings / coord.: Thomas H. Christensen ... - Bd. 2 : Siting, lining, drainage \& landfill mechanics},
  publisher = {CISA, Environmental Sanitary Engineering Centre},
  address   = {Cagliari},
  pages     = {843 -- 853},
  year      = {1995},
  language  = {en}
}
@article{SparlaBenningSieprath1995,
  author    = {Sparla, Peter and Benning, W. and Sieprath, A.},
  title     = {Ber{\"u}hrungslose 3D-Vermessung von Sickerwassersch{\"a}chten im Deponiebereich},
  series = {Vermessungswesen und Raumordnung : VR. 57 (1995), H. 7-8},
  journal   = {Vermessungswesen und Raumordnung : VR. 57 (1995), H. 7-8},
  isbn      = {0340-5141},
  pages     = {397 -- 407},
  year      = {1995},
  language  = {de}
}
@article{Sparla1995,
  author    = {Sparla, Peter},
  title     = {Zur GPS-gest{\"u}tzten Talsperren{\"u}berwachung},
  series = {125 Jahre Geod{\"a}sie an der RWTH Aachen},
  journal   = {125 Jahre Geod{\"a}sie an der RWTH Aachen},
  publisher = {Geod{\"a}tisches Inst. der Rheinisch-Westf{\"a}lischen Techn. Hochsch.},
  address   = {Aachen},
  pages     = {47 -- 58},
  year      = {1995},
  language  = {de}
}