Isu T, Minoshima S, Mabuchi S: Anterior decompression and fusion bone grafts obtained from cervical vertebral bodies for ossification of the posterior longitudinal ligament of the cervical spine. Neurosurgery 40: 866-870, 1997
Kim K, Isu T, Matsumoto R, et al: Surgical pitfalls of an ultrasonic bone curette (SONOPET) in spinal surgery. Neurosurgery 59: ONS390-393, 2006