Analysis of information sources in references of the Wikipedia article "Polish government-in-exile" in English language version.
Of the 13.5 million civilians living in Polish areas annexed by the Soviet Union according to the last official Polish census, the population was over 38% Poles (5.1 million), 37% Ukrainians (4.7 million), 14.5% Belarusians, 8.4% Jews, 0.9% Russians and 0.6% Germans.Also in: Wrocławskie Studia Wschodnie, Wrocław, 1997.