Gupta, A. K., A. Sharma, A. Shukla, and S. N. Iyengar. “Non-Communicating Extradural Arachnoid Cyst: A Rare Case Report With Review of Literature”. Romanian Neurosurgery, vol. 32, no. 1, Mar. 2018, pp. 156-9, https://journals.lapub.co.uk/index.php/roneurosurgery/article/view/1073.