Super-frame based source controlled variable rate coding using approximated trellis diagram. - Kei Kikuiri; Nobuhiko Naka; Tomoyuki Ohya (ICASSP (2), 2003)

Variable bit rate control with trellis diagram approximation. - Kei Kikuiri; Nobuhiko Naka; Tomoyuki Ohya (INTERSPEECH, 2003)

Phase-modification for improving efficiency of audio coders. - Kei Kikuiri; Nobuhiko Naka; Tomoyuki Ohya (MMSP, 2004)

Composite Permutation Coding with Simple Indexing for Speech/Audio Codecs. - Shinya Abe; Kei Kikuiri; Nobuhiko Naka (ICASSP (4), 2007)

Standardization of the new 3GPP EVS codec. - Stefan Bruhn; Harald Pobloth; Markus Schnell; Bernhard Grill; Jon Gibbs; Lei Miao 004; Kari Järvinen; Lasse Laaksonen; Noboru Harada; Nobuhiko Naka; Stéphane Ragot; Stéphane Proust; et al. (ICASSP, 2015)