Tracing the origins of permitted emission lines in RU Lupi down to AU scales L. Podio, P. J. V. Garcia, F. Bacciotti, S. Antoniucci, B. Nisini, C. Dougados and M. Takami A&A, 480 2 (2008) 421-430 Published online: 09 January 2008 DOI: 10.1051/0004-6361:20078694