1. A. Berman and R. J. Plemmons,Nonnegative Matrices in the Mathematical Sciences, Academic Press 1979.
2. C. R. DePrima and B. K. Richard,A characterization of the positive cone of B(h), Indiana Univ. Math. J.23 (1973), 163–172.
3. S. Friedland, D. Hershkowitz and H. Schneider,Matrices whose powers are M-matrices or Z-matrices, to appear.
4. P. R. Halmos,Finite-Dimensional Vector Spaces, 2nd edn., Van Nostrand, 1958.
5. D. Hershkowitz and H. Schneider,Sequences, wedges and associated sets of complex numbers, to appear.