New H2O masers in Seyfert and FIR bright galaxies - IV. Interferometric follow-ups A. Tarchi, P. Castangia, C. Henkel, G. Surcis and K. M. Menten A&A, 525 (2011) A91 Published online: 03 December 2010 DOI: 10.1051/0004-6361/201014714