R.Beringer, Phys. Rev., 1946, 70, 53.
R.Beringer and J.G.Castle Jr, Phys. Rev., 1949, 75, 1963; ibid., 1951, 81, 82.
For dioxygen.

R.Beringer and J.G.Castle Jr, Phys. Rev., 1950, 78, 581; ibid., 1951, 81, 82.
For nitric oxide.