Nagendra Bhargava Bharatula Rolf Zinniker Gerhard Tröster Hybrid Micropower Supply for Wearable-Pervasive Sensor nodes. 196-197 2005 conf/iswc/2005 ISWC http://doi.ieeecomputersociety.org/10.1109/ISWC.2005.26 db/conf/iswc/iswc2005.html#BharatulaZT05