Subband structure of p-type δ-doped GaAs as dependent on the acceptor concentration and the layer thicknessE. Ozturk, M. K. Bahar and I. SokmenEur. Phys. J. Appl. Phys., 41 3 (2008) 195-200DOI: https://doi.org/10.1051/epjap:2008018