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\bibitem{VanEynde_etal2014} {\textquotedblleft}\textit{Effect of pretreatment and temperature on the properties of \textbf{Pinnularia} biosilica frustules}{\textquotedblright}. Van Eynde E, Lenaerts B, Tytgat T, Verbruggen SW, Hauchecorne B, Blust R, Lenaerts S, RSC advances \textbf{4}, 56200 (2014).   http://doi.org/10.1039/C4RA09305D

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