Lee, Lin-ShanLin-ShanLeeChou, Ger-ChihGer-ChihChouLIN-SHAN LEE2020-06-112020-06-111986https://scholars.lib.ntu.edu.tw/handle/123456789/498560A General Theory for Asynchronous Speech Encryption Techniques.journal article10.1109/JSAC.1986.1146315https://doi.org/10.1109/JSAC.1986.1146315