1 J.. Cooper, and E.W. Smith, Journal of Quantitative Spectroscopy and Radiative Transfer 27, (1982).
1 R.J. Ballagh, J.. Cooper, M.W. Hamilton, W.J. Sandle, and D.M. Warrington, Optics Communications 37, (1981).
1 J.-B.. Yelnik, K.. Burnett, J.. Cooper, R.J. Ballagh, and D.. Voslamber, The Astrophysical Journal 248, (1981).