  We present here evidence for the existence of a citation advantage within
astrophysics for papers that link to data. Using simple measures based on
publication data from NASA Astrophysics Data System we find a citation
advantage for papers with links to data receiving on the average significantly
more citations per paper than papers without links to data. Furthermore, using
INSPEC and Web of Science databases we investigate whether either papers of an
experimental or theoretical nature display different citation behavior.
