@article{DBLP:journals/algorithmica/BateniC13,
  author    = {MohammadHossein Bateni and
               Julia Chuzhoy},
  title     = {Approximation Algorithms for the Directed {\it k}-Tour
               and {\it k}-Stroll Problems},
  journal   = {Algorithmica},
  volume    = {65},
  number    = {3},
  year      = {2013},
  pages     = {545-561},
  ee        = {http://dx.doi.org/10.1007/s00453-011-9610-6},
 note = {Earlier version in APPROX 2010}
 }

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