@article{Farrenq:1901,
      author        = "Farrenq, R. and  Guelachvili, G. and  Sauval, A. J. and 
                       Grevesse, N. and  Farmer, C. B.",
      title         = "{Improved Dunham coefficients for CO from infrared solar
                       lines of high rotational excitation}",
      year          = "1991",
}