[Analysis of the Greulich-Pyle atlas using the TW2 and TW2-A method]

Authors analyze Greulich and Pyle's atlas, using TW2 and TW2-A methods, in their three respective modalities (20B, C, RUS). They observe that there are differences between three variables and GP. Results are compared with those of other authors concluding that use of numerical methods adapted to population in study are the ideal ones.