APA (7th ed.) Citation

Ángel, C. J. (2020). On the existence of periodic oscillations for pendulum-type equations. De Gruyter.

Chicago Style (17th ed.) Citation

Ángel, Cid J. On the Existence of Periodic Oscillations for Pendulum-type Equations. De Gruyter, 2020.

MLA (8th ed.) Citation

Ángel, Cid J. On the Existence of Periodic Oscillations for Pendulum-type Equations. De Gruyter, 2020.

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