@incollection{Ishino20,
author = {Shotaro Ishino and Satoshi Denno and Narumi Yashiro and Seiichi Suzuki},
title = {Long-Distance and Low-Radiation Waveguide Antennas for Wireless Communication Systems inside Tunnels},
booktitle = {Electromagnetic Propagation and Waveguides in Photonics and Microwave Engineering},
publisher = {IntechOpen},
address = {Rijeka},
year = {2020},
editor = {Patrick Steglich},
chapter = {6},
doi = {10.5772/intechopen.92246},
url = {https://doi.org/10.5772/intechopen.92246}
}