Tolong jelaskan mengenai Catatan dari Geri dan Freki

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Spiedel, Michael (2004). Ancient Germanic Warriors: Warrior Styles from Trajan's Column to Icelandic Sagas. Routledge.

Thorpe, Benjamin (Trans) (1907). Edda Sæmundar Hinns Frôða The Edda of Sæmund the Learned. Part I. London Trübner & Co