Piñero-Pinto , E, et al. “THE INFANT MASSAGE AS AN INTERVENTION TOOL IN THE DEVELOPMENT OF DOWN SYNDROME BABIES. PILOT STUDY”. Cuestiones De Fisioterapia, vol. 47, no. 2, Apr. 2018, pp. 100-1, https://cuestionesdefisioterapia.com/index.php/es/article/view/169.