Popov, T., Dimitrov, S., Dobriyanova, V., Valcheva, S., Dimitrov, L., Marinov, V., Marinov, T., Schreiber, A., & Skelina, S. (2025). Endoscopic endonasal resection of advanced stage T3/T4 sinonasal malignancies involving the skull base: monocentric single-surgeon study (2020-2024). Acta Medica Bulgarica, 52(4), 18-23. https://doi.org/10.2478/AMB-2025-0071