1. Information Technology—Coding of Moving Pictures and Associated Audio for Digital Storage Media at up to about 1.5 Mbit/s—Part 2: Video, ISO/IEC 11172-2, 1993.
2. Information Technology—Generic Coding of Moving Pictures and Associated Audio Information: Video, ISO/IEC 13818-2 and ITU-T Recommendation H.262, 1996.
3. Information Technology—Coding of Audio-Visual Objects—Part 2: Visual, ISO/IEC 14496/2, 1999.
4. Video Codec for Audiovisual Services at p × 64 Kbit/s, ITU-T Recommendation H.261, Mar. 1993.
5. Video Coding for Low Bit Rate Communication, ITU-T Recommendation H.263, Feb. 1998.