Hans L. Bodlaender Richard B. Tan Thomas C. van Dijk Jan van Leeuwen Integer Maximum Flow in Wireless Sensor Networks with Energy Constraint. 102-113 2008 SWAT http://dx.doi.org/10.1007/978-3-540-69903-3_11 conf/swat/2008 db/conf/swat/swat2008.html#BodlaenderTDL08