Angioni, C., Peeters, A. G., Garbet, X., Manini, A., Ryter, F., & ASDEX Upgrade Team (2004). Density response to central electron heating: theoretical investigations and experimental observations in ASDEX Upgrade. Nuclear Fusion, 44, 827-845. Retrieved from http://stacks.iop.org/0029-5515/44/827.