Ng, C. K., N. J. Touma, V. Chalasani, M. Moussa, D. B. Downey, and J. L. Chin. “The Pattern of Prostate Cancer Local Recurrence After Radiation and Salvage Cryoablation”. Canadian Urological Association Journal, vol. 5, no. 6, Apr. 2013, pp. E125-E128, doi:10.5489/cuaj.748.