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\bibitem{Leys_etal2004} {\textquotedblleft}\textit{Relativistic virial relations for both homogeneous and spatially varying electron liquids}{\textquotedblright}. Leys FE, March NH, Lamoen D, Physics And Chemistry Of Liquids \textbf{42}, 423 (2004).   http://doi.org/10.1080/00319100410001697873

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