Hsu, C. Y.C. Y.HsuWu, Ja-LingJa-LingWu2009-04-242018-07-052009-04-242018-07-051987-10http://ntur.lib.ntu.edu.tw//handle/246246/152001en-USBlock-Diagonal Structure of Walsh-Hadamard /Discrete Cosine Transformjournal article