Micali, A., A. Roszkowska, R. Spinella, P. Aragona, A. Pisani, and D. Puzzolo. “A Confocal, Structural and Ultrastructural Investigation on Salzmann’s Nodular Corneal Degeneration”. Italian Journal of Anatomy and Embryology, vol. 115, no. 1/2, Nov. 2010, p. 112, https://oajournals.fupress.net/index.php/ijae/article/view/4497.