APA (7th ed.) Citation

Kurgaev, A. F., & Grigorev, S. N. (2017). The definition of formal languages in the meta language of normal forms of knowledge.

Chicago Style (17th ed.) Citation

Kurgaev, A. F., and S. N. Grigorev. The Definition of Formal Languages in the Meta Language of Normal Forms of Knowledge. 2017.

MLA (8th ed.) Citation

Kurgaev, A. F., and S. N. Grigorev. The Definition of Formal Languages in the Meta Language of Normal Forms of Knowledge. 2017.

Warning: These citations may not always be 100% accurate.