@inproceedings{inproceedings2451c902, title = {Elementary excitations of modulation-doped quantum-wells}, author = {Anjos, V and Bell, M J V and Leão, S A and Souza, M A R and Leite, J. R.}, year = {2004}, publisher = {SBF}, booktitle = {Encontro Nacional de Fisica da Materia Condensada} }