Ion-assisted CVD of graded diamond like carbon (DLC) based coatings D.P. MONAGHAN, D.G. TEER, R.D. ARNELL, I. EFEOGLU et W. AHMED J. Phys. IV France, 03 C3 (1993) C3-579-C3-587 DOI: 10.1051/jp4:1993380