Almeda FQ, Chua DY, Nathan S, Kim S, Meyer PM, Nguyen C, Chu JC, Kavinsky CJ, Snell RJ, Schaer GL. Correlates of failure following treatment with Sr-90 beta irradiation for in-stent restenosis. Catheter Cardiovasc Interv. 2003 Jun; 59(2):176-83.