Kirzhaeva Vera P., Osovsky Oleg O. «Sergei Gessen at work on the book on Soviet educational policy (based on letters to Nikolai Hans)» // Text. Book. Publishing 2025. №38 C.176-197
Osovskiy Oleg E., Kirzhaeva Vera P. «S.I. Gessen and the Russkaya shkola za rubezhom journal: from the history of the Russian emigre pedagogical journalism of the 1920s - the beginning of the 1930s» // Tomsk State University Journal of Philology 2017. №48 C.202-228
Kirzhaeva Vera P. «Sergei Gessen and the journal Russkaya Shkola: From the history of pedagogical journalism of Russia abroad in the 1930s» // Tomsk State University Journal of Philology 2025. №93 C.267-285