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[HSB03] John Hershberger, Subhash Suri, and Amir Bhosle. On the Difficulty of Some Shortest Path Problems. In STACS'03, Lecture Notes in Computer Science 2607, pages 343-354. Springer-Verlag, February 2003. 
@inproceedings{stacs2003-HSB,
  author =              {Hershberger, John and Suri, Subhash and Bhosle,
                         Amir},
  title =               {On the Difficulty of Some Shortest Path Problems},
  editor =              {Alt, Helmut and Habib, Michel},
  booktitle =           {{P}roceedings of the 20th {S}ymposium on
                         {T}heoretical {A}spects of {C}omputer {S}cience
                         ({STACS}'03)},
  acronym =             {{STACS}'03},
  publisher =           {Springer-Verlag},
  series =              {Lecture Notes in Computer Science},
  volume =              {2607},
  pages =               {343-354},
  year =                {2003},
  month =               feb,
}
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