Gramada, F. M., A. Indrei, S. M. Iencean, I. Poeata, G. Dumitrescu, and L. Miron. “Management of Unknown Origin Cerebral Metastases”. Romanian Neurosurgery, vol. 18, no. 1, Mar. 2011, pp. 60-67, https://journals.lapub.co.uk/index.php/roneurosurgery/article/view/540.