APA (7th ed.) Citation

Perestyuk, N. A., Feketa, P. V., Перестюк, М. О., & Фекета, П. В. (2013). On Preservation of the Invariant torus for Multifrequency Systems. Institute of Mathematics, NAS of Ukraine.

Chicago Style (17th ed.) Citation

Perestyuk, N. A., P. V. Feketa, М. О Перестюк, and П. В Фекета. On Preservation of the Invariant Torus for Multifrequency Systems. Institute of Mathematics, NAS of Ukraine, 2013.

MLA (8th ed.) Citation

Perestyuk, N. A., et al. On Preservation of the Invariant Torus for Multifrequency Systems. Institute of Mathematics, NAS of Ukraine, 2013.

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