@article{velloso_araújo_schwartzman_2009,  title={Concepts of color, shape, size and position in ten children with Rett syndrome},  volume={67},  ISSN={0004-282X},  url={https://doi.org/10.1590/S0004-282X2009000100013},  DOI={10.1590/S0004-282X2009000100013},  number={1},  journal={Arquivos de Neuro-Psiquiatria},  publisher={Academia Brasileira de Neurologia - ABNEURO},  author={Velloso, Renata de Lima and Araújo, Ceres Alves de and Schwartzman, José Salomão},  year={2009},  month={Mar},  pages={50–54} }