Arild Fuldseth E. Harborg F. T. Johansen J. E. Knudsen Wideband speech coding at 16 kbit/s for a videophone application. 139-148 1992 11 Speech Communication 2-3 http://dx.doi.org/10.1016/0167-6393(92)90008-U db/journals/speech/speech11.html#FuldsethHJK92