Covariant Kolmogorov equation and entropy current for the relativistic Ornstein-Uhlenbeck process C. Barbachoux, F. Debbasch and J. P. Rivet Eur. Phys. J. B, 23 4 (2001) 487-496 Published online: 15 October 2001 DOI: 10.1007/s100510170040