@article{asaad2018optimal,

title={Optimal transmit antenna selection for massive MIMO wiretap channels},

author={Asaad, Saba and Bereyhi, Ali and Rabiei, Amir Masoud and M{\"u}ller, Ralf R and Schaefer, Rafael F},

journal={IEEE Journal on Selected Areas in Communications},

volume={36},

number={4},

pages={817--828},

year={2018},

publisher={IEEE}

}