참고문헌
- Linear Algebra and Its Appl. v.208;209 Sign-Central Matrices R. A. Brualdi;T. Ando
-
Soviet Math. (IZ. VUZ)
v.334
Solubility of the system Ax = 0,
$x {\ge} 0$ with indefinite coefficients G. V. Davydov;I. M. Davydova - J. Appl. Math. and Computing v.10 no.1-2 A note on sign central matrices G. Y. Lee
- Bull. Korean Math. Soc. v.37 no.4 A characterization of nearly sign central matrices G. Y. Lee;G. S. Cheon
- Electronic J. Linear Algebra v.4 Sign consistency and solvability of constrained linear systems G. Y. Lee;B. L. Shader