1. The generalized correlation method for estimation of time delay;Knapp;IEEE Trans. Audio Speech Lang. Process.,1976
2. Coherence and time delay estimation;Carter;Proc. IEEE,1987
3. The acoustic telescope;Billingsley;J. Sound Vib.,1976
4. System responsive to the energy flow of sound waves;Olson,1932
5. Acoustic holography;Mueller;Proc. IEEE,1971