Juang, Wen-ShenqWen-ShenqJuangChen, Sian-TengSian-TengChenLei, Chin-LaungChin-LaungLei2011-02-162018-07-062011-02-162018-07-062006-11http://ntur.lib.ntu.edu.tw//handle/246246/231271en-USVOIP SECURITY (IN COLLECTED PAPERS ON INFORMATION AND COMMUNICATION SECURITY)book