@incollection{Jiang12,
author = {Xunya Jiang and Zheng Liu and Wei Li and Zixian Liang and Penjun Yao and Xulin Lin and Xiaogang Zhang and Yongliang Zhang and Lina Shi},
title = {The Group Velocity Picture of Metamaterial Systems},
booktitle = {Metamaterial},
publisher = {IntechOpen},
address = {Rijeka},
year = {2012},
editor = {Xun-Ya Jiang},
chapter = {3},
doi = {10.5772/35886},
url = {https://doi.org/10.5772/35886}
}