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\bibitem{Schweigert_etal1999} {\textquotedblleft}\textit{Melting of the classical bilayer Wigner crystal: influence of the lattice symmetry}{\textquotedblright}. Schweigert IV, Schweigert VA, Peeters FM, Physical review letters \textbf{82}, 5293 (1999).   http://doi.org/10.1103/PhysRevLett.82.5293

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