Demurtas, P., M. Corrias, I. Zucca, C. Maxia, F. Piras, P. Sirigu, and M.T. Perra. 2014. “Angiotensin II: Immunohistochemical Study in Sardinian Pterygium”. European Journal of Histochemistry 58 (3). https://doi.org/10.4081/ejh.2014.2426.