@article{articleaffa027a,
title   = {Effects of intersubband coupling on Friedel oscillations in quasi-two-dimensional electron systems},
author = {Hai, Guo-Qiang and Peeters, F M and Studart, Nelson and Marques, G E},
year = {1999},
doi = {10.1006/spmi.1998.0635},
journal   = {Superlattices and Microstructures}
}