Possidente, Luca;    Freddi, Fabio;    Tondini, Nicola;      (2025)    Fire response of steel frames retrofitted against progressive collapse.                   Fire Safety Journal , 153     , Article 104371.  10.1016/j.firesaf.2025.104371 <https://doi.org/10.1016/j.firesaf.2025.104371>.       Green open access