Derek C. K. Lee Michael J. Neve Kevin W. Sowerby The Impact of Structural Shielding on the Performance of Wireless Systems in a Single-Floor Office Building. 1787-1695 2007 6 IEEE Trans. Wirel. Commun. 5 https://doi.org/10.1109/TWC.2007.360380 db/journals/twc/twc6.html#LeeNS07