1
Weil, John A., Bolton, James R. Electron paramagnetic resonance: elementary theory and practical applications. 2nd ed. Hoboken, N.J.: : Wiley-Interscience 2007. http://encore.lib.warwick.ac.uk/iii/encore/record/C__Rb2513084
2
Levitt MH. Spin dynamics: basics of nuclear magnetic resonance. 2nd ed. Chichester, England: : John Wiley & Sons 2008. http://encore.lib.warwick.ac.uk/iii/encore/record/C__Rb2534080