@INPROCEEDINGS {40583,
author={F. Prudêncio and M. G. Silveirinha},
doi={},
booktitle={XXXVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS 2023)},
title={Travelling-Wave Spacetime Crystals},
year={2023},
month={August},
volume={},
pages={-} 
}