Sahu, A., S. Pandey, K. Singh, and V. Sharma. “A Comparative Study of Endoscopic Versus Navigation Guided Microscopic Transsphenoidal Pituitary Surgery at Tertiary Care Centre in India”. Romanian Neurosurgery, vol. 32, no. 3, Sept. 2018, pp. 443-57, https://journals.lapub.co.uk/index.php/roneurosurgery/article/view/1113.