On the use of local strain fields for the determination of the intrinsic length scale M.G.D. Geers, R. de Borst, W.A.M. Brekelmans et R.H.J. Peerlings J. Phys. IV France, 08 PR8 (1998) Pr8-167-Pr8-174 DOI: 10.1051/jp4:1998821