E. Herrera González, L. Delgado Tenorio, H. Fonseca Schmidt, and P. Vargas Ramírez, “Socio-emotional factors related to the academic difficulties of ‘star’ children of the psychomotricity and intervention program”, MHSalud, vol. 9, no. 1, Jul. 2012, doi: 10.15359/mhs.9-1.2.