“Diagnosis of the Accents of Work by Directions in the Launch of the School Hammer of the EIDE ‘Pedro Batista Fonseca’ of Granma (Original)”. Revista científica Olimpia, vol. 16, no. 55, June 2019, pp. 177-88, https://revistas.udg.co.cu/index.php/olimpia/article/view/833.