00815cam a22002655i 4500 124297 124297 21770933 20211012103250.0 170802s2018 gw |||| o |||| 0|eng 9783030285821 PK-LaUMT 004.678 ZHA-E Zhang, Rongrong Energy-Efficient Spectrum Management for Cognitive Radio Sensor Networks / by Rongrong Zhang and Jihong Yu Switzerland : Springer, 2020 134 p. Computer communication systems. Electrical engineering. Energy systems. Communications Engineering, Networks. Computer Communication Networks. Energy Systems. Shen, Xuemin (Sherman), Zhang, Ning, BK 0 0 0 0 01 01 2021-10-12 0 004.678 ZHA-E 138956 2021-10-12 00:00:00 2021-10-12 BK