K. RAVI KUMAR, K. BINDU SRI, K. V. SANJAY, P. NAVEEN KUMAR, S. SANDHYA, Y. MALLIKARJUNA RAO, P. V. SUBBAIAH, CH. SESHU KUMAR. A Review on Beamforming Approaches for Speech Enhancement. International Journal of Control and Automation, v. 13, n. 4, p. 590 - 595, 27 May 2020.