(1)
Bhadauria, S.; Saxena, S.; Prasad, R.; Sharma, P.; Prasad, R.; Dwivedi, R. Synthesis of Ethylene Carbonate from Cyclocondensation of Ethylene Glycol and Urea over ZnO•Cr2O3 Catalyst System Controlled by Co-Precipitation Method. Eur. J. Chem. 2012, 3, 235-240.