Source number estimator using Gerschgorin disks. - Hsien-Tsai Wu; Jar-Ferr Yang; Fwu-Kuen Chen (ICASSP (4), 1994)

Source number estimators using transformed Gerschgorin radii. - Hsien-Tsai Wu; Jar-Ferr Yang; Fwu-Kuen Chen (IEEE Trans. Signal Process., 1995)