Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Zheng Chu and Hong Xing and Martin Johnston and Stephane Le Goff,Secrecy Rate Optimizations for a MISO Secrecy Channel with Multiple Multiantenna Eavesdroppers,IEEE Transactions on Wireless Communications,1536-1276,Institute of Electrical and Electronics Engineers (IEEE),2016-01,15,1,283-297,https://cir.nii.ac.jp/crid/1360855571014176512,https://doi.org/10.1109/twc.2015.2472405