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\bibitem{Phuttaro_etal2023} {\textquotedblleft}\textit{Integrated poultry waste management by co-digestion with perennial grass : effects of mixing ratio, pretreatments, reaction temperature, and effluent recycle on biomethanation yield}{\textquotedblright}. Phuttaro C, Krishnan S, Saritpongteeraka K, Charnnok B, Diels L, Chaiprapat S, Biochemical engineering journal \textbf{196}, 108937 (2023).   http://doi.org/10.1016/J.BEJ.2023.108937

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