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\bibitem{Ferreira_etal2005} {\textquotedblleft}\textit{Structural phase transitions and unusual melting behavior in a classical two-dimensional Coulomb bound cluster}{\textquotedblright}. Ferreira WP, Partoens B, Peeters FM, Farias GA, Physical review : E : statistical physics, plasmas, fluids, and related interdisciplinary topics \textbf{71}, 021501 (2005).   http://doi.org/10.1103/PhysRevE.71.021501

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