SCHJØRRING, Jens Holger. Helge Grell in memoriam. Grundtvig-Studier, [S. l.], v. 51, n. 1, p. 8–13, 2000. DOI: 10.7146/grs.v51i1.16350. Disponível em: https://tidsskrift.dk/grs/article/view/16350. Acesso em: 6 dec. 2025.