Источник данных #4540
@article{8473EL, journal={Phys. Rev. A}, volume={49}, pages={3519--3530}, title={Relativistic All-Order Many-Body Calculations of the n~=~1 and n~=~2 States of Heliumlike Ions}, author={D. R. Plante and W. R. Johnson and J. Sapirstein}, year={1994}, doi={10.1103/PhysRevA.49.3519}}
@article{8473EL, journal={Phys. Rev. A}, volume={49}, pages={3519--3530}, title={Relativistic All-Order Many-Body Calculations of the n~=~1 and n~=~2 States of Heliumlike Ions}, author={D. R. Plante and W. R. Johnson and J. Sapirstein}, year={1994}, doi={10.1103/PhysRevA.49.3519}}