BELTRAN, JOSÉ ANDRES, Edwin Rolando Guamán Narváez, Christian Daniel Vazco Silva, and Edison Patricio Usiña Tirira. 2026. “Comparative Analysis of the Octane Rating of Extra and Super Gasoline at Stations in Quito”. Investigación Tecnológica IST Central Técnico 8 (1):20-31. https://www.investigacionistct.ec/ojs/index.php/investigacion_tecnologica/article/view/205.