The Redshift of the Lensed Object in the Einstein Ring B0218+357
  We present a secure redshift of z=0.944\pm0.002 for the lensed object in the Einstein ring gravitational lens B0218+357 based on five broad emission lines, in good agreement with our preliminary value announced several years ago based solely on the detection of a single emission line. 
Judith G. Cohen, Charles R. Lawrence and Roger D. Blandford