re: determine tables in view (9iR2)

hi all,
  is there a (relatively) simple query or function to obtain all tables from a view, keeping in mind that that view can have many subviews which in turn could have many subviews etc etc (recursive func)    

  I don't want to re-invent the wheel nor write some funky long pl/sql, if something already exists out there ;-)    

  thx much,
  Cos

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