1. Тhе Art of Compeer Programming, Vol. 3, Sorting and Searching;Knuth,1973
2. On an optimality property of ternary trees
3. The Art of Computer Programming, Vol. 1, Fundamental Algorithms;Knuth,1973
4. Wang Zhenyu (王振宇）, Kexue Tongbao, 29 (1984), 1–5.
5. Wang Zhenyu (王振宇）, Сhinese Annals of mathеmatics, 4B (1983), 501–504.