entity_id,source_id,evidence_type,source_note ENT_BALT_PERKUNAS,SRC_GIMBUTAS_BALTS,scholarly attestation,"Gimbutas (1963) pp. 199-200: Perkūnas etymology, iconography, vs. Velnias myth cycle." ENT_BALT_PERKUNAS,SRC_GREIMAS_LITHUANIAN,scholarly attestation,Greimas (1992) pp. 77-120: the Perkūnas-vs.-Velnias narrative; cosmic battle structure.