Javaid, A., Bildea, C. S. “Integrated Production of γ-butyrolactone through Coupling of Maleic Anhydride Hydrogenation and 1,4-butanediol Dehydrogenation”, Periodica Polytechnica Chemical Engineering, 58(2), pp. 165–169, 2014. https://doi.org/10.3311/PPch.7303