1. Radiographic atlas of skeletal development of hand wrist;Greulich,1959
2. The applicability of North American growth standards in developing countries;Garn;Can Med Assoc J,1965
3. Roche AF et al. National Center for Health Statistics: skeletal maturity of youths 12–17years: racial, geographic area and socioeconomic differentials, United States. In: Roche AF, Roberts J, Hamill PVV, editors. Vital and health statistics. Series 11-no. 167. DHEW Pub. no. (HRA) 79-1654. Health Resources Administration. Washington: US Government Printing Office, October 1978.
4. Applicability of the Greulich and Pyle skeletal age standards to black and white children of today;Loder;Am J Dis Child,1993
5. Assessment of skeletal maturity and prediction of adult height (TW2) method;Tanner,1975