entity_id,source_id,evidence_type,source_note ENT_SLAV_VELES,SRC_BRUCKNER_SLAVIC_MYTH,scholarly attestation,Brückner (1918) pp. 138-155: Veles/Volos cattle deity; Perun-Veles mythological opposition. ENT_SLAV_VELES,SRC_PRIMARY_CHRONICLE_PVL,direct attestation,"PVL oath treaties AD 945 (Igor's treaty) and 971 (Svyatoslav's treaty): ""by Perun their god and Volos the god of cattle."" Primary attestation as cattle-wealth deity and oath-god."