Gunnar Schaefer François Ingelrest Martin Vetterli Potentials of Opportunistic Routing in Energy-Constrained Wireless Sensor Networks. 118-133 2009 EWSN http://dx.doi.org/10.1007/978-3-642-00224-3_8 conf/ewsn/2009 db/conf/ewsn/ewsn2009.html#SchaeferIV09