S. K.  Singh and Dhepe, P. L., ?Lignin conversion using catalytic ionic liquids: understanding the role of cations, anions, and hammett acidity functions?, Industrial & Engineering Chemistry Research, vol. 58, no. 47, pp. 21273-21284, 2019.

S. K.  Singh, Matsagar, B. M., and Dhepe, P. L., ?Lignocellulosic biomass analysis: acidic lignin recovery, characterisation, and depolymerisation?, Biomass Conversion and Biorefinery, vol. 14, no. 4, pp. 5239-5249, 2024.