Covariant black-body and the 3 °K radiation field

@article{Alexanian1969CovariantBA,
  title={Covariant black-body and the 3 °K radiation field},
  author={Moorad Alexanian},
  journal={Lettere al Nuovo Cimento (1969-1970)},
  year={1969},
  volume={1},
  pages={75-78}
}