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Gestorum Abbatem Trudonensium Continuatio Tertia, (under 1021) Koepker (ed.) MGH...
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Gestorum Abbatem Trudonensium Continuatio Tertia, (under 1021) Koepker (ed.) MGH SS Vol.10, p. 382 (with big gaps); =de Borman (ed.) Vol.2 140-141; =Lavigne (trans.) 228-229 (pdf).