@inbook{
  author = {B. Matthiesen and E.A. Jorswieck},
  year = {2020},
  month = {Nov},
  title = {Optimization Techniques for Energy Efficiency},
  editor = {Himal Asanga Suraweera, Jing Yang, Alessio Zappone, John S. Thompson},
  publisher = {IET},
  ISBN = {978-1-83953-067-8},
  URL = {https://shop.theiet.org/green-communications-for-energy-efficient-wireless-systems-and-networks},
  address={Hertfordshire, UK},
  booktitle={Green Communications for Energy-Efficient Wireless Systems and Networks}
}