@inproceedings{inproceedings94859285,
title   = {Bound state of an impurity center and non-linear screening in a two-dimensional electron gas},
author = {Brito, B. G. A. and Cândido, L. and Hai, Guo-Qiang},
year = {2013},
publisher = {Instituto de Física de São Carlos - IFSC},
booktitle   = {Brazilian Workshop on Semiconductor Physics - BWSP}
}