Hirshman, S.P., and D.J. Sigmar. “Neoclassical Transport of Impurities in Tokamak Plasmas”. Nuclear Fusion, vol. 21, no. 9, 1981, pp. 1079-01, https://doi.org/10.1088/0029-5515/21/9/003.
Hirshman, S., & Sigmar, D. (1981). Neoclassical transport of impurities in tokamak plasmas. Nuclear Fusion, 21(9), 1079-1201. https://doi.org/10.1088/0029-5515/21/9/003
Hirshman S, Sigmar D. Neoclassical transport of impurities in tokamak plasmas. Nuclear Fusion. 1981;21(9):1079-201.