Massive star-formation in G24.78+0.08 explored through VLBI maser observations L. Moscadelli, C. Goddi, R. Cesaroni, M. T. Beltrán and R. S. Furuya A&A, 472 3 (2007) 867-879 Published online: 16 July 2007 DOI: 10.1051/0004-6361:20077823