Author Index for Volume 144 Axar, Nai: See Ozguler, A. Biilent Osert, Davin G.: The Angle Between Two Cones, 63 Onc, S1nc-CuEonc: On Equality of Invariant Bei, F. K.: On the Maximal Index of Con- Subspace Lattices of Operators, 23 nected Graphs, 135 Ouatrara, Moussa: Sur les Algébres de Bernstein d’Ordre 2, 29 Cuine, Li, and Ji-Cuenc, Cuen: On a Bound Ouattara, Moussa: Sur les T-Algébres de for the Hadamard Product of an M-Matrix Jordan, 11 and Its Inverse, 171 Ozcuter, A. BULENT and Akar, Natt: A Com- mon Solution to a Pair of Linear Matrix Equations Over a Principle Ideal Domain, Gatrazzo, Remo: Polynomial Matrices With 85 Given Determinant, 107 Son, C. B.: Necessary and Sufficient Condi- Haypen, T. L., We.ts, Jim, Liv, We1-Min, tions for Interval Polynomials to Have Only and Tarazaca, P.: The Cone of Distance Real Distinct Roots, 121 Matrices, 153 TarazaGa, P.: See Hayden, T. L. Ji-Cuenc, Cuen: See Ching, Li Jépar, Lucas: solving Algebraic and Differ- Wanyi, Cuen: Stabilizability, Controllability, ential Riccati Operator Equations, 71 and Observability of Linear Continous-time Systems Defined Over a Commutative Ba- nach* Algebra, 1 Li, Wen: The Relationship of a Regular Split- WELLs, Jim: See Hayden, T. L. ting to a Graph Compatible Splitting, 101 Liv, We1-Min: See Hayden, T. L. YE, Q.: See Najman, B. Nayman, B. and Ye, Q.: A Minimax Character- ZHonG, Xu: An Algorithm for the Inversion of ization for Eigenvalues of Hermitial Pen- Quasi-Hessenberg Matrices, 39 cils, 217 Narayanan, H.: The Principle Lattice of Parti- VON ZUR GATHEN, JOACHIM: Maximal Bilinear tions of s Submodular Function, 179 Complexity and Codes, 49