Nührenberg, J. Stellarator Theory (ST), Max Planck Institute for Plasma Physics, Max Planck Society;
https://doi.org/10.1585/pfr.3.S1046 (Publisher version)
Bovshuk, V., Cooper, A., Mikhailov, M., Nührenberg, J., & Shafranov, V. (2008). Search for very-high-β MHD stable quasi-isodynamic configurations. Plasma and Fusion Research, 3: S1046 (5pp). doi:10.1585/pfr.3.S1046.