Erratum to: A Serpent/OpenFOAM coupling for 3D burnup analysisChristian Castagna, Eric Cervi, Stefano Lorenzi, Antonio Cammi, Davide Chiesa, Monica Sisti, Massimiliano Nastasi and Ezio PrevitaliEur. Phys. J. Plus, 135 6 (2020) 524DOI: https://doi.org/10.1140/epjp/s13360-020-00519-0