Guerrero Godoy S del R, Villamarin Padilla JM, Padilla Muñoz MA. Freight and mathematical models and logistics transport enterprises in the city of Riobamba. CCD [Internet]. 2020Jul.21 [cited 2025Jul.4];3(3):313-31. Available from: https://www.cienciadigital.org/revistacienciadigital2/index.php/ConcienciaDigital/article/view/1318