M. Barcelo, A. Correa, J. Lopez Vicario, and A. Morell. Personal Indoor and Mobile Radio Communications (PIMRC), 2013 IEEE 24th International Symposium on, page 1989-1993. (September 2013)
Z. Sadouq, M. El Mabrouk, and M. Essaaidi. Information Science and Technology (CIST), 2014 Third IEEE International Colloquium in, page 402-409. (October 2014)