Park, M., Murakami, M., Petty, C. C., Heidbrink, W. W., Osborne, T. H., Holcomb, C. T., et al. (2009). Validation of on- and off-axis neutral beam current drive against experiment in DIII-D. Physics of Plasmas, 16: 092508 (10pp). doi:10.1063/1.3213614.