Kolesnichenko, Y. I., Lutsenko, V. V., Weller, A., Werner, A., Wobig, H., Yakovenko, Y. V., et al. (2005). Effects of fast-ion-orbit width on Alfvén instabilities in stellarators: a general theory and its application to a W7-AS experiment. Talk presented at IAEA Technical Meeting on Innovative Concepts and Theory of Stellarators. Madrid. 2005-10-10 - 2005-10-11.