@article{kopeliovich_rezaeian_schmidt_2008,  title={Handedness of direct photons},  volume={38},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332008000400012},  DOI={10.1590/S0103-97332008000400012},  number={3b},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Kopeliovich, B. Z. and Rezaeian, A. H. and Schmidt, Ivan},  year={2008},  month={Sep},  pages={443–448} }