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Lin, Hsiao-Ying; Tzeng, Wen-Guey (2005-06-07). "An Efficient Solution to the Millionaires' Problem Based on Homomorphic Encryption". Applied Cryptography and Network Security. Lecture Notes in Computer Science. Vol. 3531. pp. 456–466. CiteSeerX10.1.1.75.4917. doi:10.1007/11496137_31. ISBN978-3-540-26223-7.