Источник данных #1812
@article{12392EL, journal={J. Phys. Chem. Ref. Data}, volume={37}, pages={7--96}, title={Wavelengths, Transition Probabilities, and Energy Levels for the Spectra of Potassium (K~I through K~XIX)}, author={J. E. Sansonetti}, year={2008}, doi={10.1063/1.2789451}, notes={NIST compilation}}
@article{12392EL, journal={J. Phys. Chem. Ref. Data}, volume={37}, pages={7--96}, title={Wavelengths, Transition Probabilities, and Energy Levels for the Spectra of Potassium (K~I through K~XIX)}, author={J. E. Sansonetti}, year={2008}, doi={10.1063/1.2789451}, notes={NIST compilation}}