Bechev, K., N. Yotova, D. Markov, A. Fasova, and S. Markov. “Anatomical Variants of the Nasal Cavity and Paranasal Sinuses in Clinical and Surgical Practice”. Acta Medica Bulgarica 53, no. Suppl 1 (February 6, 2026): 142–154. Accessed February 7, 2026. https://journals.mu-sofia.bg/index.php/amb/article/view/412.