B. M.  Matsagar, Munshi, M. K., Kelkar, A. A., and Dhepe, P. Laxmikant, ?Conversion of concentrated sugar solutions into 5-hydroxymethyl furfural and furfural using Bronsted acidic ionic liquids?, Catalysis Science & Technology, vol. 5, no. 12, pp. 5086-5090, 2015.