1. The associations between adolescent head-on-neck posture, backpack weight, and anthropometric features;Grimmer;Spine,1999
2. Weight of school bags in a Freibury elementary school: recommendations to parents and teachers;Sander;Offentliche Gesundheitswesen,1979
3. Influence of carrying book bags on gait cycle and posture of youths;Pascoe;Ergonomics,1997
4. Hong Kong Society for Child Health and Development. The weight of school bags and its relation to spinal deformity. Hong Kong: The Department of Orthopedic Surgery, University of Hong Kong, The Duchess of Kent Children's Hospital, 1988.
5. Back pain in school children a study among 1178 pupils;Troussier;Scandinavian Journal of Rehabilitation Medicine,1994