Shunsuke Koshita, Masahide Abe, Masayuki Kawamata. Gramian-Preserving Frequency Transformation for State-Space Digital Filters. In IEEE Asia Pacific Conference on Circuits and Systems 2006, APCCAS 2006, Singapore, 4-7 December 2006. pages 1220-1223, IEEE, 2006. [doi]
Abstract is missing.