Masukidi, LS., Lahaye, JG., & Fayt, A. (1992). Intracavity Co and Co2-laser Stark Spectroscopy of the Isotopomers of Carbonyl Sulfide. Journal of Molecular Spectroscopy, 154(1), 137-162. https://doi.org/10.1016/0022-2852(92)90035-M (Original work published 1992)