Ayala-Astorga, Gloria Irma, and Lilia Alcaraz-Meléndez. 2010. “Salinity Effects on Protein Content, Lipid Peroxidation, Pigments, and Proline in Paulownia Imperialis (Siebold & Zuccarini) and Paulownia Fortunei (Seemann & Hemsley) Grown in Vitro”. Electronic Journal of Biotechnology 13 (5). Valparaíso, Chile:0-0. https://www.ejbiotechnology.info/index.php/ejbiotechnology/article/view/v13n5-13.