Carbamic acid produced by the UV/EUV irradiation of interstellar ice analogs Y.-J. Chen, M. Nuevo, J.-M. Hsieh, T.-S. Yih, W.-H. Sun, W.-H. Ip, H.-S. Fung, S.-Y. Chiang, Y.-Y. Lee, J.-M. Chen and C.-Y. R. Wu A&A, 464 1 (2007) 253-257 Published online: 19 December 2006 DOI: 10.1051/0004-6361:20066631