Russian grammar (English Wikipedia)

Björn Rothstein; Rolff Thieroff (2010). Mood in the Languages of Europe. John Benjamins Publishing. p. 326.
Hasko, Victoria (2010). "Semantic Composition of Motion Verbs in Russian and English". In Renee Perelmutter (ed.). New Approaches to Slavic Verbs of Motion. Amsterdam: John Benjamins Publishing Company. pp. 197–224. ISBN 978-9027205827.
Paul Cubberley (2002). Russian: A Linguistic Introduction. Cambridge University Press. pp. 162, 164. ISBN 0-521-79641-5.
А. А. Камынина (1999). Современный русский язык. Морфология. Издательство МГУ. p. 180. ISBN 5-211-04133-X.
Bailyn, John F. (2012). The Syntax of Russian. Cambridge University Press. pp. 115–118. ISBN 978-0-521-88574-4.
Comrie, Bernard (1984). "Russian". Typological Studies in Language. 4 (Interrogativity: A Colloquium on the Grammar, Typology, and Pragmatics of Questions in Seven Diverse Languages, Cleveland, Ohio, October 5th, 1981 – May 3rd, 1982): 36–37.

cooljugator.com

Corbett, Greville G. (June 1987). "The Morphology/Syntax Interface: Evidence from Possessive Adjectives in Slavonic" (PDF). Language. 2. 63 (2): 299–345. doi:10.2307/415658. JSTOR 415658. Retrieved 13 December 2013.
Nesset, Tore (2008). "Path and Manner: An Image-Schematic Approach to Russian Verbs of Motion". Scando-Slavica. 54 (1): 135–158. doi:10.1080/00806760802494232. S2CID 123427088.

Corbett, Greville G. (June 1987). "The Morphology/Syntax Interface: Evidence from Possessive Adjectives in Slavonic" (PDF). Language. 2. 63 (2): 299–345. doi:10.2307/415658. JSTOR 415658. Retrieved 13 December 2013.
Gor, K., Cook, S., Malyushenkova, V., & Vdovina, T (2009). "Verbs of Motion in Highly Proficient Learners and Heritage Speakers of Russian". The Slavic and East European Journal. 53 (3): 386–408. JSTOR 40651163.{{cite journal}}: CS1 maint: multiple names: authors list (link)

(in Russian) Uspenskij V. A. "К определению падежа по А. Н. Колмогорову // Бюллетень объединения по проблемам машинного перевода." Issue. 5. Moscow., 1957 online copy Archived 2012-04-23 at the Wayback Machine

Nesset, Tore (2008). "Path and Manner: An Image-Schematic Approach to Russian Verbs of Motion". Scando-Slavica. 54 (1): 135–158. doi:10.1080/00806760802494232. S2CID 123427088.

(in Russian) Uspenskij V. A. "К определению падежа по А. Н. Колмогорову // Бюллетень объединения по проблемам машинного перевода." Issue. 5. Moscow., 1957 online copy Archived 2012-04-23 at the Wayback Machine

Rare but existing forms; they appear e.g. in negative sentences: как Он знает Писания, не учившись? (John 7:15).