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\bibitem{Apolinario_etal2007} {\textquotedblleft}\textit{Structural and dynamical aspects of small three-dimensional spherical Coulomb clusters}{\textquotedblright}. Apolinario SWS, Partoens B, Peeters FM, New journal of physics \textbf{9}, 283 (2007).   http://doi.org/10.1088/1367-2630/9/8/283

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