Adi Putra, Z. and Kurnia, J.C. and Sasmito, A.P. and Muraza, O.  (2019) Process design and techno-economic analysis of ethyl levulinate production from carbon dioxide and 1,4-butanediol as an alternative biofuel and fuel additive.  International Journal of Energy Research, 43 (11).  pp. 5932-5945.  ISSN 0363907X