Ronca, G., L. Márquez, y C. Albano. «Study of the Heterogenous Crystallization of Polypropylene With Various Coupling Agents». Rev. Téc. Fac. Ing. Univ. Zulia, Vol. 22, n.º 2, 1, https://produccioncientifica.luz.edu.ve/index.php/tecnica/article/view/5624.