APA (7th ed.) Citation

Faisal, S., Shah, A., Sheikh, A., & unknown. (2001). Downlink channel estimation for IMT-DS.

Chicago Style (17th ed.) Citation

Faisal, S., A. Shah, A.U.H Sheikh, and unknown. Downlink Channel Estimation for IMT-DS. 2001.

MLA (9th ed.) Citation

Faisal, S., et al. Downlink Channel Estimation for IMT-DS. 2001.

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