Zozulya, Y. P., Y. I. Slynko, and I. I. Al-Qashqish. “Surgical Treatment of the Ventral Intradural Tumours on Craniovertebral and Upper Cervical Localization”. Ukrainian Neurosurgical Journal, no. 4, pp. 46-54, https://theunj.org/article/view/145014.