APA (7th ed.) Citation

Tretiak, K. R., & Smirnova, O. M. (2013). The study of periodic changes in altitude of the satellite permanent stations of the Europe.

Chicago Style (17th ed.) Citation

Tretiak, K. R., and O. M. Smirnova. The Study of Periodic Changes in Altitude of the Satellite Permanent Stations of the Europe. 2013.

MLA (8th ed.) Citation

Tretiak, K. R., and O. M. Smirnova. The Study of Periodic Changes in Altitude of the Satellite Permanent Stations of the Europe. 2013.

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