@article{brodsky_2004, title={Gauge theories on the light-front}, volume={34}, ISSN={0103-9733}, url={https://doi.org/10.1590/S0103-97332004000200003}, DOI={10.1590/S0103-97332004000200003}, number={1a}, journal={Brazilian Journal of Physics}, publisher={Sociedade Brasileira de Física}, author={Brodsky, Stanley J.}, year={2004}, month={Mar}, pages={157–165} }