Diffraction in DIS on nuclear targets
  We discuss the implications of a strong enhancement of diffraction for multiproduction in DIS off nuclear targets. The predicted effects are large and observable at HERA. We present the prediction of a large tensor structure function b_2(x) of the deuteron which does not vanish at small x. 
N. N. Nikolaev (1,2,3), W. Schaefer (2), B. G. Zakharov (3), V. R.   Zoller (4) ((1) ITKP Bonn, (2) IKP,KFA-Juelich, (3) Lan...