Fuentes-Dávila, Guillermo, and Richard Gabrielson. “Penetration and Infection of Spinach (Spinacia Oleracea L.) Leaf Tissues by Cladosporium Variabile”. Scientia Fungorum, vol. 3, no. 12, Oct. 2016, pp. 49-55, doi:10.33885/sf.1996.3.848.