...2003)

http://isdc.unige.ch?Support+documents

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... database

http://simbad.u-strasbg.fr/simbad

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... Database

NED; http://nedwww.ipac.caltech.edu

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... PIMMS

http://heasarc.gsfc.nasa.gov/Tools/w3pimms.html

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...)

We note that in the submitted version of the Tueller et al. (2008) paper their LF is plotted with a wrong normalization, lower than the value they quote.

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