Kellogg, J. M. B.; Rabi, I. I.; Ramsey, N. F. Jr.; Zacharias, J. R. (October 1939). “The Magnetic Moment of the Proton and the Deuteron. The Radiofrequency Spectrum of 2H in Various Magnetic Fields”. Physical Review56: 728–743. Bibcode: 1939PhRv...56..728K. doi:10.1103/PhysRev.56.728.
Kellogg, J. M. B.; Rabi, I. I.; Ramsey, N. F. Jr.; Zacharias, J. R. (October 1939). “The Magnetic Moment of the Proton and the Deuteron. The Radiofrequency Spectrum of 2H in Various Magnetic Fields”. Physical Review56: 728–743. Bibcode: 1939PhRv...56..728K. doi:10.1103/PhysRev.56.728.