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Su, Bogong; Ding, Shiyuan; Wang, Jian; Xia, Jinshi . (1987). [ACM Press the 20th annual workshop - Colorado Springs, Colorado, United States (1987.12.01-1987.12.04)] Proceedings of the 20th annual workshop on Microprogramming - MICRO 20 - Microcode compaction with timing constraints. , (), 59–68. doi:10.1145/255305.255314 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research