1. Introduction;Kocherginsky,1995
2. Free nitroxyl radicals;Rozantsev,1970
3. Berliner, L. J.; Reuben, J. Spin labeling I and II, theory and applications. Vols. 1 and 2. New York: Academic Press; 1976–1979.
4. Structural chemistry and molecular biology;Hamilton,1968
5. Advances in magnetic resonance imaging;Swartz,1988