Marshall K, Chan MD, McCoy TP, Aubuchon AC, Bourland JD, McMullen KP, deGuzman AF, Munley MT, Shaw EG, Tatter SB, Ellis TL. Predictive variables for the successful treatment of trigeminal neuralgia with gamma knife radiosurgery. Neurosurgery. 2012 Mar; 70(3):566-72; discussion 572-3.