Brane inflation and the robustness of the Starobinsky inflationary model S. Santos da Costa, M. Benetti, R. M. P. Neves, F. A. Brito, R. Silva and J. Alcaniz Eur. Phys. J. Plus, 136 1 (2021) 84 Published online: 14 January 2021 DOI: 10.1140/epjp/s13360-020-01015-1