[1] https://www.fidesspa.com/it/content/usura
[2] https://www.fidesspa.com/sites/bpspoleto16corp/files/docs/tabella_usura_pp_iv_trim_2.pdf
[3] https://www.fidesspa.com/sites/bpspoleto16corp/files/docs/tabella_usura_iv_trim_tfs_3.pdf
[4] https://www.fidesspa.com/sites/bpspoleto16corp/files/docs/tabella_usura_iv_trim_cq-del_3.pdf