Noguera Cundar, A. P., Viteri Núñez, E. F., Noguera Cundar, A. J. and Cárdenas Chávez, J. S. (2022) “Design and manufacture of a tennis ball launcher machine ”, ConcienciaDigital, 5(4.1), pp. 286-301. doi: 10.33262/concienciadigital.v5i4.1.2468.