@InProceedings{l12-p49-60,
  AUTHOR	= {Rafael~da~Ponte Barbosa and Yoshiko Wakabayashi},
  TITLE		= {A Better Approximation Ratio and an IP Formulation for a Sensor Cover Problem},
  BOOKTITLE	= {Proc.~of the 10th Latin American Symposium on Theoretical Informatics (LATIN'12)},
  PAGES		= {49--60},
  YEAR		= 2012,
  ADDRESS	= {Arequipa, Peru},
  KEYWORDS	= {}}