Results are presented for six nuclei from Be to Pb on the structure fu
nction ratios F-2(A)/F-2(C)(X) and their A dependence in deep inelasti
c muon scattering at 200 GeV incident: muon energy. The data cover the
kinematic range 0.01 < x < 0.8 with Q(2) ranging from 2 to 70 GeV2. T
he A dependence of nuclear structure function ratios is parametrised a
nd compared to various models.