@article{article, title  = {{Low-Energy-Electron Scattering Amplitudes. II. Validity of Free-Electron-Gas Exchange Approximations Applied to Electrons Incident on Hg}},

 publisher = {{American Physical Society (APS)}},

 url = {{https://doi.org/10.1103/physreva.7.1251 }},

 year = {{1973}},

 month = {{4}},

 author = {{Gregory D and Fink M}},

 doi = {{10.1103/physreva.7.1251}},

 volume = {{7}},

 journal = {{Physical Review A}},

 issue = {{4}},

 pages = {{1251-1256}},

 note = {{Accessed on 2026/02/04}}}