H. H. Hjort, T. G. Culman, D. O. Edwards, and Jizhong He, Jizhong Finite temperature effects in the Fermi liquid theory of the diffusion of ⁴He in ³He, Low Temp. Phys. 23, (1997) [Fiz. Nizk. Temp. 23, 564-573, (1997)].