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S.S. Demidov; V. M. Tikhomirov; T. A. Tokarev. "История Московского математического общества" [History of the Moscow Mathematical Society]. Moscow Mathematical Society. Retrieved January 22, 2012. (in Russian)
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Grave, Dmitry (1890–1907). "Давидов, Август Юльевич" [Davidov, August Yulevich]. Brockhaus and Efron Encyclopedic Dictionary. St. Petersburg. Retrieved January 22, 2012.{{cite encyclopedia}}: CS1 maint: location missing publisher (link)(in Russian)
