Fantz, U., Wünderlich, D., Heinemann, B., Kraus, W., Riedl, R., & NNBI Team, Max Planck Institute for Plasma Physics, Max Planck Society (2016). Operation of large RF sources for H–: lessons learned at ELISE. Talk presented at 5th International Symposium on Negative Ions, Beams and Sources (NIBS 2016). Oxford. 2016-09-12 - 2016-09-16.