1. Anhuii SSCH Group (1987) Study on the adolescent growth and development of Hefei school students, with a comparison between urban and rural areas. Presented at 1987 chinese National Physical Educational and Sports Scientific Congress (I133). Beijing (in Chinese).
2. Height, weight and menarcheal age of Oslo schoolchildren during the last 60 years
3. Chinese National Bureau of Statistics (1987) Chinese Statistics Almanac in 1987. Beijing:Chinese Statistics Pubnlication (in Chinese).
4. Chinese National SSCH Association (1987) National Ssurvey on Students Constitution and Health. Beijing. People's Educational Publication (in Chinese).