Wagner, F., Hirsch, M., Hartfuss, H. J., Laqua, H. P., & Maassberg, H. (2006). H-mode and transport barriers in helical systems. Plasma Physics and Controlled Fusion, 48(5A), A217-A239. Retrieved from http://www.iop.org/EJ/abstract/0741-3335/48/5A/S21.