Analysis of information sources in references of the Wikipedia article "Σιλβέστερ Μπελτ" in Greek language version.
|lang= ignored (|language= suggested) (βοήθεια)|lang= ignored (|language= suggested) (βοήθεια)|lang= ignored (|language= suggested) (βοήθεια)|lang= ignored (|language= suggested) (βοήθεια)|lang= ignored (|language= suggested) (βοήθεια)