1. A. Schweiger, G. Jeschke, Principles of Pulse Electron Paramagnetic Resonance (Oxford University Press, Oxford, United Kingdom, 2001)
2. For a contemporary review on the state-of-the-art, see W. Yang, W. L. Ma, R.-B. liu, Rep. Prog. Phys. 80, 016001 (2017)
3. M. Pannier, S. Veit, A. Godt, G. Jeschke, H.W. Speiss, J. Magn. Reson. 142, 331 (2000)
4. G. Jeschke, Y. Polyhach, Phys. Chem. Chem. Phys. 9, 1895 (2007)
5. V. Meyer, M.A. Swanson, L.J. Clouston, P.J. Broatynski, R.A. Stein, S.H. Mchaourab, A. Rajca, S.S. Eaton, G.R. Eaton, Biophys. J. 108, 1213 (2015)