Galanina, Ivanchik & Parzinger 1997, pp. 119, 277. Galanina, Ludmila Konstantinovna; Ivanchik, Askold Igorevich; Parzinger, Hermann (1997). Die Kurgane von Kelermes: Königsgräber der frühskythischen Zeit [Burial Mounds of Kelermes: Royal Tombs of the Early Scythian Time]. Steppenvölker Eurasiens (in German and Russian). Vol. 1. Moscow: Institute of World History of the Russian Academy of Sciences, Department of Comparative Studies of Ancient Civilizations. ISBN9785895260012.
Amir & Roberts 2023, p. 23: "The Iron Age Saka population of eastern Eurasia is considered the earliest of the Scythian groups to emerge in the 1st millennium BCE, as well as being the most substantial part of the Eastern group of the pan-Scythian family, occupying almost the entire territory of modern Kazakhstan, Kyrgyzstan, Tajikistan, northern Afghanistan, north-west China and northern Mongolia, and substantial parts of western and eastern Siberia (...) Among the earliest securely dated Iron Age Eurasian pastoralist sites of the whole region are the burial mounds (kurgans) located on the territory of western Siberia and East Kazakhstan, including Arzhan-1 and 2, and Baigetobe (...) It is highly probable that these two regions gave an initial spark of emergence and development of the whole Saka-Scythian world that expanded and flourished for almost a millennium.". Amir, Saltanat; Roberts, Rebecca C. (2023). "The Saka 'Animal Style' in Context: Material, Technology, Form and Use". Arts. 12: 23. doi:10.3390/arts12010023.
Amir & Roberts 2023, p. 23: "The Iron Age Saka population of eastern Eurasia is considered the earliest of the Scythian groups to emerge in the 1st millennium BCE, as well as being the most substantial part of the Eastern group of the pan-Scythian family, occupying almost the entire territory of modern Kazakhstan, Kyrgyzstan, Tajikistan, northern Afghanistan, north-west China and northern Mongolia, and substantial parts of western and eastern Siberia (...) Among the earliest securely dated Iron Age Eurasian pastoralist sites of the whole region are the burial mounds (kurgans) located on the territory of western Siberia and East Kazakhstan, including Arzhan-1 and 2, and Baigetobe (...) It is highly probable that these two regions gave an initial spark of emergence and development of the whole Saka-Scythian world that expanded and flourished for almost a millennium.". Amir, Saltanat; Roberts, Rebecca C. (2023). "The Saka 'Animal Style' in Context: Material, Technology, Form and Use". Arts. 12: 23. doi:10.3390/arts12010023.
