Physical conditions in the neutral interstellar medium at z = 2.43 toward Q 2348-011 P. Noterdaeme, P. Petitjean, R. Srianand, C. Ledoux and F. Le Petit A&A, 469 2 (2007) 425-436 Published online: 11 April 2007 DOI: 10.1051/0004-6361:20066897