50 μas resolution VLBI images of AGN's at λ3 mm F. T. Rantakyrö, L.B. Båå th, D. C. Backer, R. S. Booth, J. E. Carlstrom, D. T. Emerson, M. Grewing, H. Hirabayashi, M. W. Hodges, M. Inoue et al. (14 more) Astron. Astrophys. Suppl. Ser., 131 3 (1998) 451-467 Published online: 15 September 1998 DOI: 10.1051/aas:1998282