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3. Alkali (NaOH) Pretreatment of Switchgrass by Radio Frequency-based Dielectric Heating
4. T. Lope , A.Phani and K.Mahdi, Biomass Feedstock Pre-Processing – Part 1: Pre-Treatment, Biofuel's Engineering Process Technology, ed. Dr Marco Aurelio Dos Santos Bernardes, InTech, 2011, ISBN: 978-953-307-480-1, http://www.intechopen.com/books/biofuel-s-engineering-processtechnology/biomass-feedstock-pre-processing-part-1-pre-treatment
5. Enhancing the combustible properties of bamboo by torrefaction