Helander, P. Stellarator Theory (ST), Max Planck Institute for Plasma Physics, Max Planck Society;
https://doi.org/10.1017/S002237781900093X (Publisher version)
https://doi.org/10.1017/S0022377820001464 (Publisher version)
Catto_Bootstrap.pdf (Any fulltext), 5MB
Catto, P. J., & Helander, P. (2020). Bootstrap current and parallel ion velocity in imperfectly optimized stellarators. Journal of Plasma Physics, 85(1): 905860105. doi:10.1017/S002237781900093X.