@article{crispino_meira filho_2005,  title={Scalar source in circular motion interacting with massive klein-gordon field in Minkowski spacetime},  volume={35},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332005000700018},  DOI={10.1590/S0103-97332005000700018},  number={4b},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Crispino, Luís C. B. and Meira Filho, Damião P.},  year={2005},  month={Dec},  pages={1084–1085} }