\newcommand{\etalchar}[1]{$^{#1}$}
-\begin{thebibliography}{CHG{\etalchar{+}}14b}
+\begin{thebibliography}{WBGF10}
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Jean{-}Fran{\c{c}}ois Couchot, Pierre{-}Cyrille H{\'{e}}am, Christophe Guyeux,
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