APA (7th ed.) Citation

Liu, R., & Ma, W. Massive celestial amplitudes and celestial amplitudes beyond four points. SpringerOpen.

Chicago Style (17th ed.) Citation

Liu, Reiko, and Wen-Jie Ma. Massive Celestial Amplitudes and Celestial Amplitudes Beyond Four Points. SpringerOpen.

MLA (9th ed.) Citation

Liu, Reiko, and Wen-Jie Ma. Massive Celestial Amplitudes and Celestial Amplitudes Beyond Four Points. SpringerOpen.

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