 Kailath, T. 

 Roychowdhury, V.  A geometric approach to threshold circuit complexity  1991 
 Hassibi, B.  H^ Optimality of the LMS Algorithm  1993 
 Hassibi, B.  Recursive linear estimation in Krein spaces  part I: Theory  December 1993 
 Hassibi, B.  H^ Bounds for the recursiveleastsquares algorithm  December 1994 
