A
[ALP04] Rajeev Alur, Salvatore La Torre, and George J. Pappas. Optimal paths in weighted timed automata. Theoretical Computer Science 318(3):297-322. Elsevier, June 2004. 
@article{tcs318(3)-ALP,
  author =              {Alur, Rajeev and La{~}Torre, Salvatore and Pappas,
                         George J.},
  title =               {Optimal paths in weighted timed automata},
  publisher =           {Elsevier},
  journal =             {Theoretical Computer Science},
  volume =              {318},
  number =              {3},
  pages =               {297-322},
  year =                {2004},
  month =               jun,
  doi =                 {10.1016/j.tcs.2003.10.038},
}
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