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Institute of Computer Science
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@InProceedings{hkt-vgrpwh-07,
  author = { Frank Hoffmann and Klaus Kriegel and Csaba Toth },
  title = { Vertex Guards in Rectilinear Polygons with Holes },
  booktitle = { The Kyoto International Conference on Computational Geometry and Graph Theory (Abstracts) },
  year = { 2007 },
  pages = { Session 04A, 2 pages },
  address = { Kyoto, Japan },
}


@InProceedings{ghkksw-naafb-04,
  author = { Robert G{\"u}nzler and Frank Hoffmann and Christian Knauer and Klaus Kriegel and Sven Sch{\"o}nherr and Udo Warschewske },
  title = { Ein neuer algorithmischer Ansatz zur Fluoroskopie-basierten Neuronavigation },
  booktitle = { Proceedings Workshop Bildverarbeitung f{\"u}r die Medizin (BVM) 2004 },
  year = { 2004 },
  publisher = { Springer },
  address = { Berlin, Germany },
}


@InProceedings{ghkksw-naafb-04,
  author = { Robert G{\"u}nzler and Frank Hoffmann and Christian Knauer and Klaus Kriegel and Sven Sch{\"o}nherr and Udo Warschewske },
  title = { Ein neues algorithmisches Verfahren zur Fluoroskopie-basierten Neuronavigation },
  booktitle = { Proceedings Workshop Bildverarbeitung f{\"u}r die Medizin (BVM) 2004 },
  year = { 2004 },
  publisher = { Springer },
  address = { Berlin, Germany },
}


@Article{ehkkrw-ce-04,
  author = { Alon Efrat and Frank Hoffmann and Christian Knauer and Klaus Kriegel and G{\"u}nter Rote and Carola Wenk },
  title = { Covering with Ellipses },
  journal = { Algorithmica },
  year = { 2003 },
  volume = { 38 },
  number = { 1 },
  note = { Special Issue on Shape Algorithmics },
}


@InProceedings{ehkkrw-cse-02,
  author = { Alon Efrat and Frank Hoffmann and Christian Knauer and Klaus Kriegel and G{\"u}nter Rote and Carola Wenk },
  title = { Covering shapes by ellipses },
  booktitle = { Proceedings of the 13th Annual ACM-SIAM Symposium on Discrete Algorithms (SODA), San Francisco },
  year = { 2002 },
  pages = { 453-454 },
  address = { San Francisco, USA },
}


@TechReport{ehkkrw-ce-01,
  author = { Alon Efrat and Frank Hoffmann and Christian Knauer and Klaus Kriegel and G{\"u}nter Rote and Carola Wenk },
  title = { Covering with Ellipses },
  year = { 2001 },
  month = { December },
  number = { B 01-08 },
  institution = { Freie Universit{\"a}t Berlin, Fachbereich Mathematik und Informatik },
}


@InProceedings{ehksw-gaa2d-01,
  author = { Alon Efrat and Frank Hoffmann and Klaus Kriegel and Christof Schultz and Carola Wenk },
  title = { Geometric Algorithms for the Analysis of 2D-Electrophoresis Gels },
  booktitle = { Proceedings of the Fifth Annual International Conference on Computational Molecular Biology (RECOMB) },
  year = { 2001 },
  pages = { 114-123 },
  address = { Montreal, Canada },
}


@Article{hikk-pep-01,
  author = { Frank Hoffmann and Christian Icking and Rolf Klein and Klaus Kriegel },
  title = { The Polygon Exploration Problem },
  journal = { SIAM Journal on Computing },
  year = { 2001 },
  volume = { 31(2) },
  pages = { 577-600 },
}


@Article{kshswrof-aadgu-00,
  author = { Eckart Fleck and Frank Hoffmann and Klaus Kriegel and Helmut Oswald and Vera Regitz-Zagrosek and Christof Schultz and Ingo Seefeldt and Carola Wenk },
  title = { An alternative approach to deal with geometric uncertainties in computer analysis of two-dimensional electrophoresis gels },
  journal = { Electrophoresis },
  year = { 2000 },
  volume = { 21 },
  pages = { 2637-2640 },
}


@TechReport{hksw-srgal-99,
  author = { Frank Hoffmann and Klaus Kriegel and Sven Sch{\"o}nherr and Carola Wenk },
  title = { A Simple and Robust Geometric Algorithm for Landmark Registration in Computer Assisted Neurosurgery },
  year = { 1999 },
  month = { December },
  number = { B 99-21 },
  institution = { Freie Universit{\"a}t Berlin, Fachbereich Mathematik und Informatik, Germany },
}


@Article{hkw-appmp-99,
  author = { Frank Hoffmann and Klaus Kriegel and Carola Wenk },
  title = { An applied point pattern matching problem: comparing 2D patterns of protein spots },
  journal = { Discrete Applied Mathematics },
  year = { 1999 },
  volume = { 93 },
  pages = { 75-88 },
}


@Article{phkwwsoaf-naaps-99,
  author = { Helmut Alt and Eckart Fleck and Frank Hoffmann and Klaus Kriegel and Helmut Oswald and Klaus-Peter Plei{\ss}ner and Anders Sahlstr{\"o}hm and Susan Wegner and Carola Wenk },
  title = { New algorithmic approaches to protein spot detection and pattern matching in two-dimensional electrophoresis gel databases },
  journal = { Electrophoresis },
  year = { 1999 },
  volume = { 20 },
  pages = { 755-765 },
}


@InProceedings{hikk-maar-98,
  author = { Frank Hoffmann and Christian Icking and Rolf Klein and Klaus Kriegel },
  title = { Moving an angle around a region },
  booktitle = { Proceedings SWAT'98, Springer Lecture Notes in Computer Science 1432 },
  year = { 1998 },
  pages = { 71-82 },
  address = { Stockholm },
}


@TechReport{hikk-pep2a-98,
  author = { Frank Hoffmann and Christian Icking and Rolf Klein and Klaus Kriegel },
  title = { The Polygon Exploration Problem II : The Angle Hull },
  year = { 1998 },
  number = { 245 },
  institution = { Fernuniversit{\"a}t Hagen, Praktische Informatik VI },
}


@InProceedings{hkw-m2dpp-98,
  author = { Frank Hoffmann and Klaus Kriegel and Carola Wenk },
  title = { Matching 2D patterns of protein spots },
  booktitle = { Proceedings SoCG'98 },
  year = { 1998 },
  pages = { 231-239 },
  address = { Minneapolis },
}


@TechReport{hikk-pep1c-98,
  author = { Frank Hoffmann and Christian Icking and Rolf Klein and Klaus Kriegel },
  title = { The Polygon Exploration Problem I : A Competitive Strategy },
  year = { 1998 },
  number = { 241 },
  institution = { Fernuniversit{\"a}t Hagen, Praktische Informatik VI },
}


@InProceedings{hikk-pepns-98,
  author = { Frank Hoffmann and Christian Icking and Rolf Klein and Klaus Kriegel },
  title = { The Polygon Exploration Problem: A New Strategy and a New Analysis Technique },
  booktitle = { Proceedings WAFR'98 },
  year = { 1998 },
  publisher = { A K Peters, Natick, Massachusetts },
  pages = { 211-222 },
  address = { Houston },
}


@TechReport{hkw-m2dpp-97,
  author = { Frank Hoffmann and Klaus Kriegel and Carola Wenk },
  title = { Matching 2D patterns of protein spots },
  year = { 1997 },
  number = { B 97-13 },
  institution = { Institut f{\"u}r Informatik, FU Berlin },
}


@InProceedings{hikk-cslp-97,
  author = { Frank Hoffmann and Christian Icking and Rolf Klein and Klaus Kriegel },
  title = { A Competitive Strategy for Learning a Polygon },
  booktitle = { Proceedings SODA'97 },
  year = { 1997 },
  pages = { 166-174 },
  address = { New Orleans },
}


@Article{ghks-ggprp-96,
  author = { Ervin Gy{\"o}ri and Frank Hoffmann and Klaus Kriegel and Tom Shermer },
  title = { Generalized guarding and partitioning for rectilinear polygons },
  journal = { Coputational Geometry: Theory and Applictions },
  year = { 1996 },
  volume = { 6 },
  pages = { 21-44 },
}


@Article{hk-gcric-96,
  author = { Frank Hoffmann and Klaus Kriegel },
  title = { A graph coloring result and its consequences for polygon guarding problems },
  journal = { SIAM Journal on Discrete Mathematics },
  year = { 1996 },
  volume = { 9(2) },
  pages = { 210-224 },
  address = { Hong Kong },
}


@InProceedings{ghks-ggprp-94,
  author = { Ervin Gy{\"o}ri and Frank Hoffmann and Klaus Kriegel and Tom Shermer },
  title = { Generalized guarding and partitioning for rectilinear polygons },
  booktitle = { Proceedings CCCG'94 },
  year = { 1994 },
  pages = { 302-307 },
  address = { Saskatoon },
}


@TechReport{h-agtrp-94,
  author = { Frank Hoffmann },
  title = { The art gallery theorem for rectilinear polygons with holes (revised version) },
  year = { 1994 },
  number = { 94-22 },
}


@InProceedings{hk-gcric-93,
  author = { Frank Hoffmann and Klaus Kriegel },
  title = { A graph coloring result and its consequences for polygon guarding problems },
  booktitle = { Proceedings ISAAC'93 },
  year = { 1993 },
  pages = { 78-87 },
  address = { Hong Kong },
}

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