@article{rubinger_oliveira_ribeiro_bezerra_silva_rodrigues_moreira_1999,  title={Impurity breakdown in GaAs samples grown by molecular beam Epitaxy},  volume={29},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97331999000400038},  DOI={10.1590/S0103-97331999000400038},  number={4},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Rubinger, R.M. and Oliveira, A.G. de and Ribeiro, G.M. and Bezerra, J.C. and Silva, C.M. and Rodrigues, W.N. and Moreira, M.V.B.},  year={1999},  month={Dec},  pages={793–796} }