Wobig, H. Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society;
Kolesnichenko, Y. I., Lutsenko, V. V., Wobig, H., Yakovenko, Y. V., & Fesenyuk, O. P. (2001). Alfven Continuum and High-Frequency Eigenmodes in Optimized Stellarators. Physics of Plasmas, 8, 491-509. Retrieved from http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PHPAEN000008000002000491000001&idtype=cvips&gifs=Yes.