... systems

Table 1 is only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/422/941

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... LEDA

http://leda.univ-lyon1.fr/

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... (NED

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

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