참고문헌
- Combinatorial and Graph-Theoretical Problems in Linear Algebra Combinatorial Orthogonality L. B. Beasley;R. A. Brualdi;B. L. Shader;R. A. Brualdi(ed.);S. Friedland(ed.);V. Klee(ed.)
- J. of Combinatorial Theory Series A v.85 How sparse can a matrix with orthogonal rows be? G.-S. Cheon;B. L. Shader
- Discrete Applied Mathematics J. Sparse orthogonal matrices and the Haar wavelet G.-S. Cheon;B. L. Shader
- Matrix computations(3rd, ed.) G. H. Golub;C. F. V. Loan
- Rocky Mtn. Math. J. A simple proof of Fiedler's conjecture concerning orthogonal matrices B. L. Shader