A study of the uniqueness of steering vectors in array processing. - Kah-Chye Tan; Geok-Lian Oh; Meng Hwa Er (Signal Process., 1993)

A new measure for assessing the accuracy of direction-of-arrival estimate. - Kah-Chye Tan; Meng Hwa Er; Geok-Lian Oh (Signal Process., 1994)

Estimating directions-of-arrival of coherent signals in unknown correlated noise via spatial smoothing. - Kah-Chye Tan; Geok-Lian Oh (IEEE Trans. Signal Process., 1997)