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Glørstad, Håkon; Nakrem, Hans Arne; Ørhaug, Vanja (November 2004). "Nature in society: reflections over a Mesolithic sculpture of a fossilised shell". Norwegian Archaeological Review. 37 (2): 95–110. doi:10.1080/00293650410014960. S2CID162351318.
Glørstad, Håkon; Nakrem, Hans Arne; Ørhaug, Vanja (November 2004). "Nature in society: reflections over a Mesolithic sculpture of a fossilised shell". Norwegian Archaeological Review. 37 (2): 95–110. doi:10.1080/00293650410014960. S2CID162351318.