1.
Avendaño Cárdenas DB, Salto Simbaña MA, Astudillo R. Analysis of the Opacity Level of the Urban Bus Fleet of Cooperativa Uncometro S.A. RTE [Internet]. 2020 Dec. 30 [cited 2025 Nov. 2];32(2):89-94. Available from: https://rte.espol.edu.ec/index.php/tecnologica/article/view/716