Author Index for Volume 168 Arata, Rosert E.: Characterization of Puerta, Ferran: See Ferrer, Josep Weakly Monotone Stochastic Matrices, 65 De Moor, Bart L. R.: On the Stricture and Ritov, Ya’acov: See Haviv, Moshe Geometry of the Product Singular Value Ropman, Liesa AND SuALom, Tamir: Jordan Decomposition, 95 Forms of Completions of Partial Upper Tri- Drury, S. W.: A Counterexample to a Ques- angular Matrices, 221 tion of Merikoski and Virtanen on the Rotiusium, Urnter G.: See Haviv, Moshe Compounds of Unitary Matrices, 251 Drycas, Hitmar: See ZymSlony, Roman Sato, Tamir: See Rodman, Lieba SuouGcEN, Wanc: Computing the Eigenvalues Ferrer, Josep AND Puerta, Ferran: Similar- of Modified Symmetric Matrices, 57 ity of Non-everywhere Defined Linear Szutc, Tomasz: A Nonsingularity Criterion for Maps, 27 Complex Matrices, 145 Haviv, Mosier, Rrrov, Ya’acov, and Rott- BLUM, UrieL G.: Taylor Expansions of VAuianio, H.: Determining Subspaces on Eigenvalues of Perturbed Matrices With Which a Matrix Is Nonnegative Definite, Applications to Spectral Radii of Nonnega- 71 tive Matrices, 159 JeELoNek, ZBIGNIEW: Maximal Sets of Linearly Zia, Honcyuan: A Numerical Algorithm for Independent Vectors in a Free Module Computing the Restricted Singular Value Over a Commutative Ring, 137 Decomposition of Matrix Triplets, 1 ZyMSLony, Roman aNd Drycas, HI_Mar: Leizarowitz, Arie: On Infinite Products of Jordan Algebras and Bayesian Quadratic Stochastic Matrices, 189 Estimation of Variance Components, 259