Источник данных #9612
@article{7378EL, journal={J. Res. Natl. Bur. Stand. (U.S.)}, volume={24}, pages={153--173}, title={First Spectrum of Tin}, author={W. F. Meggers}, year={1940}}
@article{7378EL, journal={J. Res. Natl. Bur. Stand. (U.S.)}, volume={24}, pages={153--173}, title={First Spectrum of Tin}, author={W. F. Meggers}, year={1940}}