@ARTICLE {19112,
author={D.  Oliveira and R. Oliveira},
doi={10.1155/2016/7849175},
journal={Mathematical Problems in Engineering},
title={Characterization of Energy Availability in RF Energy Harvesting Networks},
year={2016},
month={September},
volume={2016},
number={7849175},
pages={1-9},
ISSN={1024-123X}
}