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\bibitem{Cakir_etal2014} {\textquotedblleft}\textit{Mechanical and thermal properties of h-MX$_{2}$ (M = Cr, Mo, W, X = O, S, Se, Te) monolayers : a comparative study}{\textquotedblright}. {\c C}akir D, Peeters FM, Sevik C, Applied physics letters \textbf{104}, 203110 (2014).   http://doi.org/10.1063/1.4879543

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