"Isao Yamada,Hiroshi Hasegawa,Kohichi Sakaniwa","A Note on Constrained Least Sqnares Design of M-D FIR Filter Based on Convex Projection Technique",,"IEICE Trans. Fundamentals",,"Vol. E81-A","No. 8","pp. 1586-1591",1998,
"Isao Yamada,Kaoru Kurosawa,Hiroshi Hasegawa,Kohichi Sakaniwa","Algebraic Multidimensional Phase Unwrapping and Zero Distribution of Complex Polynomials---Characterization of Multivariate Stable Polynomials",,"IEEE Transactions on Signal Processing",,"Vol. 46","No. 6","pp. 1639-1667",1998,
"Isao Yamada,Nobuhiko Ogura,Yukihiko Yamashita,Kohichi Sakaniwa","Quadratic Optimization of Fixed Points of Nonexpansive Mappings in Hilbert Space",,"Numerical Functional Analysis and Optimization",,"Vol. 19","No. 1-2","pp. 165-190",1998,
"Frank Deutsch,Isao Yamada","Minimizing Certain Convex Functions over the Intersection of the Fixed Point Sets of Nonexpansive Mappings",,"Numerical Functional Analysis and Optimization",,"Vol. 19","No. 1-2","pp. 33-56",1998,
"山田功","電子情報通信ハンドブック（分担:信号理論）",,"電子情報通信学会編","電子情報通信学会編",,,,1998,