APA (7th ed.) Citation

Polcar, T., Parreira, N. M. G., & Cavaleiro, A. (2007). Tungsten oxide with different oxygen contents: Sliding properties.

Chicago Style (17th ed.) Citation

Polcar, T., N. M. G. Parreira, and A. Cavaleiro. Tungsten Oxide with Different Oxygen Contents: Sliding Properties. 2007.

MLA (8th ed.) Citation

Polcar, T., et al. Tungsten Oxide with Different Oxygen Contents: Sliding Properties. 2007.