https://dds.las.ac.cn/service/document?appId=a1vacbnPuv9qJRzJvdNXfsesj9JbIa6e&appKey=sPBA4vANLzjnW1k5eufEcc4k7dxfNraW&ts=1763013304683&signature=681a45c7bcb623be53e48d34d33f2226&articleTitle=Wireless+RF+Energy+Transfer+in+the+Massive+IoT+Era+-+Towards+Sustainable+Zero-energy+Networks&articleAuthor=Alves&publicationTitle=Wireless+RF+Energy+Transfer+in+the+Massive+IoT+Era+-+Towards+Sustainable+Zero-energy+Networks&language=&publicationType=1&publishYear=2021&isn=9781119718666&publisher=Wiley