APA (7th ed.) Citation

Qidwai, S. U. A., & unknown. (1997). Estimation and filtering of harmonics.

Chicago Style (17th ed.) Citation

Qidwai, Shaikh Uvais Ahmad, and unknown. Estimation and Filtering of Harmonics. 1997.

MLA (9th ed.) Citation

Qidwai, Shaikh Uvais Ahmad, and unknown. Estimation and Filtering of Harmonics. 1997.

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