1. Thoughts on inverse orthogonal matrices, simultaneous sign-succesions, and tesselated properties in two or more colors with application to Newton's rule, ornamental tile-work and the theory of numbers;Sylvester;Philos. Magazine,1967
2. J. Hadamard Resolution d'une question relative aux determinants Bull. Sci. Math. (2) 17
3. Tree structure for orthogonal transforms and application to the Hadamard transform;Vitterli;Sig. Proc.,1983
4. Autocorrelation and power spectrum of Hadamard signalling;Wilson;Proc. IEEE,1968