1. Cavanagh J, Palmer AG, Fairbrother W, Skelton N (1996) Protein Nmr Spectroscopy: Principles and Practice. Academic Press, San Diego
2. Davis J, Auger M (1999) Prog Nucl Magn Reson Spectroscopy 35: 1
3. Wüthrich K (1996) The Encyclopedia of NMR, vol 2, Wiley, NY, pp 932-939
4. Dusold S, Sebald A (2000) Annu Rep NMR Spectrosc 41: 185
5. Bennett AE, Griffin RG, Vega S (1994) NMR Bas Princ Progr 33: 3