Solving Discrete Logarithms from Partial Knowledge of the Key. - K. Gopalakrishnan; Nicolas Thériault; Chui Zhi Yao (INDOCRYPT, 2007)

An Explicit Bound On Double Exponential Sums Related to Diffie–Hellman Distributions. - Mei-Chu Chang; Chui Zhi Yao (SIAM J. Discret. Math., 2008)