Column orthogonal (0,1,-1)-matrices

References

• Beasley , L. B. , Brualdi , R. A. and Shader , B. L. 1993 . Combinatorial Orthogonality, in Combinatorial and Graph-Theoretical Problems in Linear Algebra , Edited by: Brualdi , R. A. , Friedland , S. and Kiee , V. 207 – 218 . New York : Springer-Verlag .
   Google Scholar
• Brualdi , R. A. and Ryser , H. 1991 . Combinatorial Matrix Theory, of Encyclopedia of Mathematics and its Applications , Vol. 39 , Cambridge, New York : Cambridge University Press .
   Google Scholar
• Cheon , G.-S. and Shader , B. L. 1991 . How sparse can a matrix with orthogonal rows be? . 39 Preprint
   Google Scholar
• Geramita , A. V. and Seberry , J. “ Orthogonal designs ” . In Lecture Notes in Pure and Applied Mathematics , New York : Marcel Dekker .
   Google Scholar
• Gibson , P. M. and Zhang , G. H. Combinatorially orthogonal matrices and related . Linear Algebra Appl. , to appear
   Google Scholar
• Zhang , G. H. Quasi-weighing matrices , preprint
   Google Scholar