1. ISO-IEC‘Generic coding of moving pictures and associated audio’, CD 13818-2, November 1993
2. A.W Johnson, T. Sikora, and T.K. Tan: ‘Scalable coding employing block based quarter pel precision scale 4 interpolation filters’. ISO-IEC/JTC1/Sc29/WG11, MPEG 93/120, January 1993
3. M. Iwahashi: ‘Motion compensation technique in scaling decoder for drift reduction’. ISO-IEC/JTC1/Sc29/WG11, MPEG 92/556, November 1992