Aigun (English Wikipedia)

Du Halde, Jean-Baptiste (1735). Description géographique, historique, chronologique, politique et physique de l'empire de la Chine et de la Tartarie chinoise. Vol. IV. Paris: P.G. Lemercier. pp. 15–16. Numerous later editions are available as well, including one on Google Books. Du Halde refers to the Yongle-era fort, the predecessor of Aigun, as Aykom. There seem to be few, if any, mentions of this project in other available literature.
SHIROKOGOROFF, S. M. (1934). "Reading and Transliteration of Manchu Lit.". Archives polonaises d'etudes orientales, Volumes 8-10. Contributors Polskie Towarzystwo Orientalistyczne, Polska Akademia Nauk. Komitet Nauk Orientalistycznych. Państwowe Wydawn. Naukowe. p. 122. Retrieved 25 August 2014.
SHIROKOGOROFF, S. M. (1934). "Reading and Transliteration of Manchu Lit.". Rocznik orientalistyczny, Volumes 9-10. Contributors Polskie Towarzystwo Orientalistyczne, Polska Akademia Nauk. Komitet Nauk Orientalistycznych, Polska Akademia Nauk. Zakład Orientalistyki. p. 122. Retrieved 25 August 2014.

heihe.gov.cn

爱辉区概况 Archived 2012-12-25 at the Wayback Machine (Aihui District overview) (in Chinese)

Du Halde, Jean-Baptiste (1735). Description géographique, historique, chronologique, politique et physique de l'empire de la Chine et de la Tartarie chinoise. Vol. IV. Paris: P.G. Lemercier. pp. 15–16. Numerous later editions are available as well, including one on Google Books. Du Halde refers to the Yongle-era fort, the predecessor of Aigun, as Aykom. There seem to be few, if any, mentions of this project in other available literature.

Амурская область: История НАРОДЫ АМУРСКОЙ ЗЕМЛИ Archived 2011-07-18 at the Wayback Machine (Amur Oblast - the History. The peoples of the Amur Land) (in Russian)
爱辉区概况 Archived 2012-12-25 at the Wayback Machine (Aihui District overview) (in Chinese)

Chisholm, Hugh, ed. (1911). "Aigun" . Encyclopædia Britannica. Vol. 1 (11th ed.). Cambridge University Press. p. 437.