1. Nuclear induction;Bloch;Phys. Rev.,1946
2. Sensitivity considerations in microwave paramagnetic resonance absorption techniques;Feher;Bell. Syst. Tech. J.,1957
3. Electron Spin Resonance Spectrometers;Wilmshurst,1967
4. Electron Paramagnetic Resonance: Techniques and Applications;Alger,1968
5. Electron Spin Resonance: A Comprehensive Treatise on Experimental Techniques;Poole,1967