The lower figure comes from adding up the constituents in Buringh's figures. The higher is the combined population of Germany (5m), Austria (0.7m), Czechia (0.9m), Belgium (0.4m), the Netherlands (0.3m), Switzerland (0.3m), Slovenia (0.158m), a quarter of France (1.62m), and two-thirds of Italy (3.4m) in Avakov, p. 9-11.
Crossley, Pamela Kyle. Bohai/Parhae Identity and the Coherence of Dan gur under the Kitan/Liao Empire. International Journal of Korean History. 2016, 21 (1): 11-44. doi:10.22372/ijkh.2016.21.1.11.
(a) Jean-Noël Biraben, "The History of the Human Population From the First Beginnings to the Present" in "Demography: Analysis and Synthesis: A Treatise in Population" (Eds: Graziella Caselli, Jacques Vallin, Guillaume J. Wunsch) Vol 3, Chapter 66, pp 5–18, Academic Press, San Diego (2005). (b) Jean-Noël Biraben, "An Essay Concerning Mankind's Evolution", Population, Selected Papers, Vol. 4, pp. 1–13 (1980). (c) Jean-Noël Biraben, "Essai sur l'évolution du nombre des hommes", Population Vol. 34 (no. 1), pp. 13–25 (1979).
Injae, Lee; Miller, Owen; Jinhoon, Park; Hyun-Hae, Yi. Korean History in Maps. Cambridge University Press. 2014-12-15 [2024-07-13]. ISBN 9781107098466. (原始内容存档于2024-07-13) (英语).
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