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J. E. Tanner & E. O. Stejskal (2003). "Restricted Self-Diffusion of Protons in Colloidal Systems by the Pulsed-Gradient, Spin-Echo Method". The Journal of Chemical Physics. 49 (4): 1768. Bibcode:1968JChPh..49.1768T. doi:10.1063/1.1670306.
Carr, H. Y.; Purcell, E. M. (1954). "Effects of Diffusion on Free Precession in Nuclear Magnetic Resonance Experiments". Physical Review. 94 (3): 630–638. Bibcode:1954PhRv...94..630C. doi:10.1103/PhysRev.94.630.