@article{ritter_makler_lima_2006,  title={Transport properties of a Ga1-xMn xAs/Ga1-yAl yAs double-barrier},  volume={36},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332006000600003},  DOI={10.1590/S0103-97332006000600003},  number={3b},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Ritter, C. F. and Makler, S. S. and Lima, I. C. da Cunha},  year={2006},  month={Sep},  pages={809–812} }