APA (7th ed.) Citation

Perestiuk, M. O., & Feketa, P. V. (2013). On Preservation of the Invariant torus for Multifrequency Systems.

Chicago Style (17th ed.) Citation

Perestiuk, M. O., and P. V. Feketa. On Preservation of the Invariant Torus for Multifrequency Systems. 2013.

MLA (8th ed.) Citation

Perestiuk, M. O., and P. V. Feketa. On Preservation of the Invariant Torus for Multifrequency Systems. 2013.

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