Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D ; Vol: 102; Other Information: Orig. Receipt Date: 31-DEC-56
Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D ; Vol: 81; Other Information: Letter to the editor. Orig. Receipt Date: 31-DEC-51