Cloudy has become a commonly used aid to the interpretation of spectroscopic data on a physical basis.  This is a partial list of papers which cite use of the code. 

I used the ISI “Web of Science” to find all papers that cite either Hazy (the code’s on-ine documentation) or one of the review papers that provide a summary of the code (these are Ferland et al. 1998,  PASP 110, 761; and Ferland 2000 Revista Mexicana de Astronomia y Astrofisica 9, 153).  Next all papers within this list which included me as a co-author were deleted.  The Web of Science counts some papers with a particular publication year as a publication in the following year – I have not tried to correct for this.  The procedure is done on autopilot, and I have not read many of these papers to check that the code was actually used – but there is no other reason to cite there references.  This procedure will miss papers that do not properly cite the code.

Today more than a hundred papers use Cloudy each year.  The ADS is one way to quickly check on citation rates, but the ADS also says that its citation data base is incomplete.  This list is an example of this – most citations to Cloudy are to the on-line version of its documentation, Hazy.  The ADS does not track such citations – missing roughly 700 citations over the history of the code.

The list of papers is available as a PDF file here.