- fr.wikipedia.org Grégoire Hetzel
- musify.club artist/gregoire-hetzel-797760
- kinopoisk.ru name/640064/
- my.mail.ru music/search/Grégoire Hetzel
- zvyki.com artist/446203-Gr_goire_Hetzel/
- musicbrainz.org artist/03a88225-e070-4e2d-9e7d-…
- ru.kinorium.com name/765106/
- my-hit.net star/pbhihbk/