References for P XII

.elvlc file (energy levels)

%Theoretical energy levels: Zhang, Sampson, ADNDT, 1992 , 52, 143
%Experimental energy levels: Edlen, B., 1983, Phys. Scripta, 28, 51.
%produced as part of the Arcetri/Cambridge/NRL atomic data base collaboration CHIANTI
  and the Arcetri Spectral Code
% Enrico Landi 1997

.splups file (collision data)

% filename: p_12.splups
%effective collision strengths: Keenan, F.P., 1988, Phys.Scripta, 37, 57
%produced as part of the Arcetri/Cambridge/NRL atomic data base collaboration CHIANTI
  and the Arcetri Spectral Code
% Enrico Landi 1997

.wgfa file (radiative data)

%Allowed transitions oscillator strengths: Zhang, Sampson, ADNDT, 1992, 52, 143
%oscillator strengths: forbidden transitions: Muhlethaler, Nussbaumer, 1976, A&A, 48, 109
%produced as part of the Arcetri/Cambridge/NRL atomic data base collaboration CHIANTI
  and the Arcetri Spectral Code
% Enrico Landi 1997