- fr.wikipedia.org Grégoire Hetzel
- imdb.com name/nm1055564/
- kinopoisk.ru name/640064/
- musify.club artist/gregoire-hetzel-797760
- my.mail.ru music/search/Grégoire Hetzel
- zvyki.com artist/446203-Gr_goire_Hetzel/
- musicbrainz.org artist/03a88225-e070-4e2d-9e7d-…