@article{articlea406f78e,
title   = {Modularity and hierarchical organization of action programs in human acquisition of graphic skills},
author = {Manoel, E. de J. and Basso, Luciano and Corrêa, Umberto Cesar and Tani, Go},
year = {2002},
doi = {10.1016/s0304-3940(02)01102-3},
journal   = {Neuroscience Letters}
}