Wenhui Shi, Yi Zhai, Weirong Li, Chong Shen, Xiaoming Shi
[Difference on sleeping between school-days and weekends in elementary school children, data from 8 provinces in China]
Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi
encyclopaedia subseries operator algebras noncommutative geometry theory von neumann algebras initiated series papers murray von neumann 1930s 1940