1 C.W. Patterson, H.W. Galbraith, B.J. Krohn, and W.G. Harter, Journal of Molecular Spectroscopu 77, (1979).
1 H.W. Galbraith, C.W. Patterson, B.J. Krohn, and W.G. Harter, Journal of Molecular Spectroscopy 73, (1978).