1. P. V. Sarthy and D. M. K. Lam, J. Neurochemistry,32, 1269 (1979).
2. P. J. Roberts and S. D. Anderson, J. Neurochemistry,32, 1539 (1979).
3. E. A. Evans, Tritium and its Compounds, 2nd ed., Butterworth, London (1974), p. 310.
4. V. P. Shevchenko, N. F. Myasoedov, V. V. Bezuglov, and L. D. Bergel'son, Khim. Prir. Soedin., 142 (1980).
5. V. P. Shevchenko, N. F. Myasoedov, V. V. Bezuglov, and L. D. Bergel'son, Bioorg. Khim.,5, 906 (1979).