RAPTOR - I. Time-dependent radiative transfer in arbitrary spacetimesT. Bronzwaer, J. Davelaar, Z. Younsi, M. Mościbrodzka, H. Falcke, M. Kramer and L. RezzollaA&A, 613 (2018) A2DOI: https://doi.org/10.1051/0004-6361/201732149
