Probing the ionized ISM of the CSS quasar 3C 277.1 - I. Observations W. D. Cotton, C. Fanti, R. Fanti, G. Bicknell and R. E. Spencer A&A, 448 2 (2006) 535-545 Published online: 24 February 2006 DOI: 10.1051/0004-6361:20054338