Tiznado-Hernández, Martín-Ernesto, Joel Gaffe, and Avtar K. Handa. 2004. “Isolation and Study of a Ubiquitously Expressed Tomato Pectin Methylesterase Regulatory Region”. Electronic Journal of Biotechnology 7 (1). Valparaíso, Chile:0-0. https://www.ejbiotechnology.info/index.php/ejbiotechnology/article/view/v7n1-1.