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