Nührenberg, J. Stellarator Theory (ST), Max Planck Institute for Plasma Physics, Max Planck Society;
Subbotin, A. A., Nührenberg, J., & Mikhailov, M. I. (2001). Optimisation of the Particles Confinement in Stellarator with Helical Direction of Lines B-Const. Scientific Papers of the Institute for Nuclear Research, 4 (6), 157-162.