Gotti, Stefano, et al. “Modification of Nitric Oxide Synthase Immunoreactivity in Female Mouse Limbic System During the Estrous Cycle”. Italian Journal of Anatomy and Embryology, vol. 116, no. 2, Nov. 2011, p. 84, https://oajournals.fupress.net/index.php/ijae/article/view/4658.