«European Plain» (en anglès). Encyclopædia Britannica, 2003. "Extending from eastern Poland to the Urals, the East European Plain encompasses all of the Baltic states and Belarus, nearly all of Ukraine, and much of the European portion of Russia and reaches north into Finland.— Britannica.
; Olga Solomina, Moscow«Introduction: Climate of the East European Plain». The Polish Climate in the European Context: An Historical Overview p. 71. Springer, 2009. [Consulta: 17 maig 2014]. «From introductory Notes to article: V. Klimenko, Moscow Power Engineering Institute, Moscow, Russian Federation; Moscow, Russia; & O. Solomina, Institute of Geography Russian Academy of Sciences, Moscow, Russia.»
