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J. Albert; R. Wölfel; A. Bösmann; P. Wasserscheid (2012). "Selective oxidation of complex, water-insoluble biomass to formic acid using additives as reaction accelerators". Energy Environ. Sci. 5 (7): 7956. Bibcode:2012EnEnS...5.7956A. doi:10.1039/C2EE21428H.
H. Choudhary; S. Nishimura; K. Ebitani (2015). "Synthesis of high-value organic acids from sugars promoted by hydrothermally loaded Cu oxide species on magnesia". Applied Catalysis B: Environmental. 162: 1. Bibcode:2015AppCB.162....1C. doi:10.1016/j.apcatb.2014.05.012.