A method has been developed for the analysis of atomic spectra with high speed electronic digital computers. The conversion of wavelength in air to vacuum wave numbers, the search for spectral terms, and the construction of square arrays are performed by machine computation. These techniques are applied to the analysis of the arc spectrum of ruthenium.
K. G. KESSLER, S. B. PRUSCH, and I. A. STEGUN, "Analysis of Atomic Spectra with Electronic Digital Computers," J. Opt. Soc. Am. 46, 1043-1044 (1956)