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Astron. Astrophys. 361, 1095-1111 (2000) AcknowledgementsWe wish to acknowledge especially R. Neri for many stimulating and fruitful discussions, and a carefull help in the PdBI data reduction. ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 2000 Online publication: October 10, 2000 ![]() |