Ramisch, M., Greiner, F., Mahdizadeh, N., Rahbarnia, K., & Stroth, U. (2007). Observation of large-scale coherent structures under strong E x B shear in the torsatron TJ-K. Plasma Physics and Controlled Fusion, 49(6), 777-789. doi:10.1088/0741-3335/49/6/006.