CHIANTI – an atomic database for emission lines - III. Continuum radiation and extension of the ion databaseE. Landi, M. Landini, K. P. Dere, P. R. Young and H. E. MasonAstron. Astrophys. Suppl. Ser., 135 2 (1999) 339-346DOI: https://doi.org/10.1051/aas:1999449