Visible spectroscopy of 2003 UB313: evidence for N2 ice on the surface of the largest TNO?J. Licandro, W. M. Grundy, N. Pinilla-Alonso and P. LeisyA&A, 458 1 (2006) L5-L8DOI: https://doi.org/10.1051/0004-6361:20066028
