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\bibitem{Do_etal2020} {\textquotedblleft}\textit{The novel method to reduce the silica content in lignin recovered from black liquor originating from rice straw}{\textquotedblright}. Do NH, Pham HH, Le TM, Lauwaert J, Diels L, Verberckmoes A, Do NHN, Tran VT, Le PK, Scientific Reports \textbf{10}, 21263 (2020).   http://doi.org/10.1038/S41598-020-77867-5

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