APA (7th ed.) Citation

Song, Q., & Freitas, A. (2021). On the evaluation of two-loop electroweak box diagrams for $e^+e^- \to HZ$ production.

Chicago Style (17th ed.) Citation

Song, Qian, and Ayres Freitas. On the Evaluation of Two-loop Electroweak Box Diagrams for $e^+e^- \to HZ$ Production. 2021.

MLA (9th ed.) Citation

Song, Qian, and Ayres Freitas. On the Evaluation of Two-loop Electroweak Box Diagrams for $e^+e^- \to HZ$ Production. 2021.

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