Entanglement dynamics under decoherence: from qubits to quditsA. R.R. Carvalho, F. Mintert, S. Palzer and A. BuchleitnerEur. Phys. J. D, 41 2 (2007) 425-432DOI: https://doi.org/10.1140/epjd/e2006-00246-4