1. Eddy, J., Firor, J., and Gebbie, H., Astron. J., 73, S60 (1968).
2. Bader, M., Cameron, R., Burroughs, W., and Gebbie, H., Nature, 214, 37 (1967).
3. Gebbie, H., Burroughs, W., Cameron, R., and Harries, J., Ap. J. (in the press)
4. Viktorova, A., and Zhevakin, S., Soviet Phys.-Dok., 11, 1059 (1967).
5. Gora, E., J. Mol. Spectros., 3, 78 (1959).