APA (7th ed.) Citation

Al-Farra, I. M., & unknown. (1990). Spectral estimation based on singular value decomposition techniques.

Chicago Style (17th ed.) Citation

Al-Farra, Ismail Mahmoud, and unknown. Spectral Estimation Based on Singular Value Decomposition Techniques. 1990.

MLA (9th ed.) Citation

Al-Farra, Ismail Mahmoud, and unknown. Spectral Estimation Based on Singular Value Decomposition Techniques. 1990.

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