APA (7th ed.) Citation

Khrapak, A. G., & Schmidt, W. F. (2011). Negative ions in liquid helium.

Chicago Style (17th ed.) Citation

Khrapak, A. G., and W. F. Schmidt. Negative Ions in Liquid Helium. 2011.

MLA (8th ed.) Citation

Khrapak, A. G., and W. F. Schmidt. Negative Ions in Liquid Helium. 2011.

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