High-sensitivity search for clumps in the Vega Kuiper-belt - New PdBI 1.3 mm observations V. Piétu, E. Di Folco, S. Guilloteau, F. Gueth and P. Cox A&A, 531 (2011) L2 Published online: 02 June 2011 DOI: 10.1051/0004-6361/201116796