1. Rozantsev EG, Grigorjan GL, Gusovskaya TP, Godovikov NN, Teplov NE (1971) Synthesis of some spin-labeled inhibitors and the substrate of cholinesterases, Izv AN SSSR Ser Khim 10: 2324
2. Sosnovsky G, Konieczny M (1973) Synthesis of spin-labeled phosphorus compounds, Z Naturforsch 28b: 488
3. Rozantsev EG, Suskina VI, Ivanov Yu A, Kaspruk VI (1973) New spin labels and probes for biological studies, Izv AN SSSR Ser Khim 6: 1327
4. Konieczny M, Sosnovsky G (1981) Methods for the preparation of spin-labeled phosphorus compounds and applications of some of them for phosphorilative spin labeling, Synthesis: 682
5. Zhdanov RI (1981) Paramagnetic models of biologically active compounds. Nauka Moscow p 280