1. Objective prevalence of insomnia in the São Paulo, Brazil epidemiologic sleep study
2. Prevalence and associated factors of DSM-V insomnia in Norway: the Nord-Trøndelag Health Study (HUNT 3)
3. A SURVEY OF SLEEPING DIFFICULTIES IN AN AUSTRALIAN POPULATION
4. Bartlett, D.J., Marshall, N.S., Williams, A. and Grunstein, R.R. (2008) Sleep Health New South Wales: Chronic Sleep Restriction and Daytime Sleepiness. Internal Medicine Journal, 38, 24-31.
5. 顾平. 中国睡眠研究会睡眠医学教育专业委员会专家讲座答疑第六讲失眠[J]. 世界睡眠医学杂志, 2017, 4(4): 234-242.