Growth and characterization of urea-oxalic acid crystals by solution growth technique V. Chithambaram, S. Jerome Das, Sivakumar Krishnan, M. Basheer Ahamed and R. Arivudai Nambi Eur. Phys. J. Appl. Phys., 64 2 (2013) 20201 Published online: 15 November 2013 DOI: 10.1051/epjap/2013130108