1. R. R. Ernst, G. Bodenhausen, and A. Wokaun, Principles of Nuclear Magnetic Resonance in One and Two Dimensions (Clarendon, 1990).
2. J. P. Hornak, The Basics of NMR (1997–2017). https:// www.cis.rit.edu/htbooks/nmr/inside.htm.
3. E. Blink, Basic MRI Physics (2000–2010). http://www. mri-physics.net/bin/mri-physics-en-rev1.3.pdf.
4. V. A. Atsarkin, G. V. Skrotskii, L. M. Soroko, and E. I. Fedin, Sov. Phys. Usp. 24, 841 (1981).
5. B. Blümich, Essential NMR for Scientists and Engineers (Springer, 2005).