@article{steffens_2006,  title={The temperature dependence of the QCD running coupling},  volume={36},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332006000400020},  DOI={10.1590/S0103-97332006000400020},  number={2b},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Steffens, F. M.},  year={2006},  month={Jun},  pages={582–585} }