@article{BleckenHolthausSellheier2011,
  author    = {Blecken, Udo and Holthaus-Sellheier, Ursula},
  title     = {Quantitative Prognoseverfahren f{\"u}r den B{\"u}roimmobilienmarkt. Tl. 2},
  series = {GuG : Grundst{\"u}cksmarkt und Grundst{\"u}ckswert},
  volume    = {21},
  journal   = {GuG : Grundst{\"u}cksmarkt und Grundst{\"u}ckswert},
  number    = {3},
  publisher = {Werner},
  address   = {K{\"o}ln},
  isbn      = {0938-0175},
  pages     = {156 -- 163},
  year      = {2011},
  language  = {de}
}
@article{Hebel2011,
  author    = {Hebel, Christoph},
  title     = {Anwendungen von makroskopischen Personenverkehrsnachfragemodellen},
  series = {Stadt Region Land. 2011 (2011), H. 88},
  journal   = {Stadt Region Land. 2011 (2011), H. 88},
  publisher = {ISB},
  address   = {Aachen},
  isbn      = {978-3-88354-162-4},
  pages     = {7 -- 14},
  year      = {2011},
  language  = {de}
}
@article{HebelBillionJohaenning2011,
  author    = {Hebel, Christoph and Billion, Bernd and Joh{\"a}nning, Katja},
  title     = {Evaluation von Planungswerkst{\"a}tten in der St{\"a}dteRegion},
  series = {Stadt Region Land. 2011 (2011), H. 88},
  journal   = {Stadt Region Land. 2011 (2011), H. 88},
  publisher = {RWTH},
  address   = {Aachen},
  isbn      = {978-3-88354-162-4},
  pages     = {15 -- 20},
  year      = {2011},
  language  = {de}
}
@article{HeggerClassenFeldmannetal.2011,
  author    = {Hegger, Josef and Claßen, Martin and Feldmann, Markus and D{\"o}ring, Bernd and Schaumann, Peter and Sothmann, J{\"o}rg and Bohne, Dirk and Hargus, Steen and Barben, Daniel and Aarden, Erik and Schielke, Sabine},
  title     = {Integrierte und nachhaltigkeitsorientierte Deckensysteme im Stahl- und Verbundbau},
  series = {Stahlbau},
  volume    = {Vol. 80},
  journal   = {Stahlbau},
  number    = {Iss. 10},
  publisher = {Wiley},
  address   = {Weinheim},
  issn      = {1437-1049 (E-Journal); 0038-9145 (Print)},
  pages     = {728 -- 733},
  year      = {2011},
  language  = {de}
}
@article{DoeringFeldmannKuhnhenneetal.2011,
  author    = {D{\"o}ring, Bernd and Feldmann, Markus and Kuhnhenne, Markus and M{\"u}ller, Dirk},
  title     = {Phasenwechselmaterial im Metallleichtbau zur Optimierung von Energieeffizienz und sommerlicher Raumtemperatur},
  series = {Stahlbau},
  volume    = {Vol. 80},
  journal   = {Stahlbau},
  number    = {Iss. 9},
  publisher = {Wiley},
  address   = {Weinheim},
  issn      = {1437-1049 (E-Journal); 0038-9145 (Print)},
  pages     = {666 -- 672},
  year      = {2011},
  language  = {de}
}
@article{Bung2011,
  author    = {Bung, Daniel Bernhard},
  title     = {Fließcharakteristik und Sauerstoffeintrag bei selbstbel{\"u}fteten Gerinnestr{\"o}mungen auf Kaskaden mit gem{\"a}ßigter Neigung},
  series = {{\"O}sterreichische Wasser- und Abfallwirtschaft},
  volume    = {Vol. 63},
  journal   = {{\"O}sterreichische Wasser- und Abfallwirtschaft},
  number    = {Iss. 3-4},
  publisher = {Springer},
  address   = {Berlin},
  issn      = {1613-7566 (E-Journal); 0945-358X (Print)},
  pages     = {76 -- 81},
  year      = {2011},
  language  = {de}
}
@article{Bung2011,
  author    = {Bung, Daniel Bernhard},
  title     = {Developing flow in skimming flow regime on embankment stepped spillways},
  series = {Journal of hydraulic research},
  volume    = {Vol. 49},
  journal   = {Journal of hydraulic research},
  number    = {Iss. 5},
  publisher = {Taylor \& Francis},
  address   = {London},
  issn      = {1814-2079 (E-Journal); 0022-1686 (Print)},
  pages     = {639 -- 648},
  year      = {2011},
  language  = {en}
}
@article{Jochim2012,
  author    = {Jochim, Haldor E.},
  title     = {Die Ostheidebahn - eine Alternative zur Y-Trasse},
  series = {ETR - Eisenbahntechnische Rundschau},
  volume    = {61},
  journal   = {ETR - Eisenbahntechnische Rundschau},
  number    = {11},
  publisher = {DVV Media Group},
  address   = {Hamburg},
  issn      = {0013-2845},
  pages     = {34 -- 37},
  year      = {2012},
  language  = {de}
}
@article{KirsteinMuellerWaleckiMingersetal.2012,
  author    = {Kirstein, Simon and M{\"u}ller, Karsten and Walecki-Mingers, Mark and Deserno, Thomas M.},
  title     = {Robust adaptive flow line detection in sewer pipes},
  series = {Automation in construction},
  journal   = {Automation in construction},
  number    = {21},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1872-7891 (E-Journal) ; 0926-5805 (Print)},
  doi       = {10.1016/j.autcon.2011.05.009},
  pages     = {24 -- 31},
  year      = {2012},
  abstract  = {As part of a novel approach to automatic sewer inspection, this paper presents a robust algorithm for automatic flow line detection. A large image repository is obtained from about 50,000 m sewers to represent the high variability of real world sewer systems. Automatic image processing combines Canny edge detection, Hough transform for straight lines and cost minimization using Dijkstra's shortest path algorithm. Assuming that flow lines are mostly smoothly connected horizontal structures, piecewise flow line delineation is reduced to a process of selecting adjacent line candidates. Costs are derived from the gap between adjacent candidates and their reliability. A single parameter α enables simple control of the algorithm. The detected flow line may precisely follow the segmented edges (α = 0.0) or minimize gaps at joints (α = 1.0). Both, manual and ground truth-based analysis indicate that α = 0.8 is optimal and independent of the sewer's material. The algorithm forms an essential step to further automation of sewer inspection.},
  language  = {en}
}
@article{BleckenHolthausSellheier2012,
  author    = {Blecken, Udo and Holthaus-Sellheier, Ursula},
  title     = {Quantitative Prognoseverfahren f{\"u}r Mietpreise von Bueroimmobilien am Beispiel D{\"u}sseldorf},
  series = {GuG : Grundst{\"u}cksmarkt und Grundst{\"u}ckswert},
  volume    = {23},
  journal   = {GuG : Grundst{\"u}cksmarkt und Grundst{\"u}ckswert},
  number    = {1},
  publisher = {Werner},
  address   = {K{\"o}ln},
  issn      = {0938-0175},
  pages     = {12 -- 21},
  year      = {2012},
  language  = {de}
}