Sign-sign LMS convergence with independent stochastic inputs. - Soura Dasgupta; C. Richard Johnson Jr.; A. Maylar Baksho (IEEE Trans. Inf. Theory, 1990)

Characterizing persistent excitation for the sign-sign equation error identifier. - Soura Dasgupta; C. Richard Johnson Jr.; A. Maylar Baksho (Autom., 1993)