Morales E, Cabrera P, Malquín Ángelo. Analysis of opacity levels in diesel engines with mechanical and electronic fuel injection (CRDI) systems. CONECTIVIDAD [Internet]. 2025 May 16 [cited 2026 Nov. 7];6(2):164-78. Available from: http://200.63.107.229/ojs/index.php/ISTER/article/view/271