What has the author Peter Woetmann Christoffersen written?

Reidar Thoralf Christiansen has written:

'European folklore in America'

'Gamle norske visdomsord' -- subject(s): Norwegian Proverbs

'Studies in Irish and Scandinavian folktales' -- subject(s): Folklore, History and criticism, Tales

'The Norwegian fairytales' -- subject(s): Bibliography, Classification, Fairy Tales, Tales

'Eventyr og sagn' -- subject(s): Fairy tales, Folk literature, Sagas