@incollection{Kokubo10,
author = {Yoshihiro Kokubo},
title = {A Dual-Frequency Metallic Waveguide System},
booktitle = {Microwave and Millimeter Wave Technologies},
publisher = {IntechOpen},
address = {Rijeka},
year = {2010},
editor = {Igor Minin},
chapter = {16},
doi = {10.5772/9006},
url = {https://doi.org/10.5772/9006}
}