C. Harry Hui

Bidirectional relationship between sleep and optimism with depressive mood as a mediator: A longitudinal study of Chinese working adults.

S. Cheung, E. Lau, J. Lam, 2015, Journal of psychosomatic research.

Psychological ownership and organizational optimism amid China's corporate transformation: effects of an employee ownership scheme and a management-dominated board

Warren C. K. Chiu, G. Lai, C. Harry Hui, 2007 .