Alvarenga-Rodríguez, J.M. 2020. A comparative study on speed and density in macroscopic models of vehicular traffic adding the spatial variable on speed. Revista de Matemática: Teoría y Aplicaciones. 28, 1 (Dec. 2020), 125–142. DOI:https://doi.org/10.15517/rmta.v28i1.41890.