Piña, Lourdes, Eligleys Dorante, Cézar García, José González, y Karina Martínez. 1. «Operational Variable Effects on Heavy Metals Acid Leaching Present in Fly Ash». Rev. Téc. Fac. Ing. Univ. Zulia 27 (1). http://www.produccioncientifica.luz.edu.ve/index.php/tecnica/article/view/5830.