 Hassibi, B. 

 Hassibi, B. (B. Hassibi, A. H. Sayed and T. Kailath)  Linear estimation in Krein spaces  part I: Theory  1996 
 Hassibi, B. (B. Hassibi, A. H. Sayed and T. Kailath)  H^{infinity} Optimality of the LMS Algorithm  1996 
 Hassibi, B. (B. Hassibi and T. Kailath)  H^{infinity} Bounds for the recursiveleastsquares algorithm  December 1994 
