Unveiling the nature and interaction of the intermediate/high-mass YSOs in IRAS 20343+4129 Aina Palau, R. Estalella, P. T. P. Ho, H. Beuther and M. T. Beltrán A&A, 474 3 (2007) 911-922 Published online: 23 October 2007 DOI: 10.1051/0004-6361:20077692