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2. Coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited linear-prediction. Recommendation G.729, Telecommunication Standardization Sector of ITU, Geneva, Switzerland (1996)
3. Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 kbit/s. Recommendation G.723.1, Telecommunication Standardization Sector of ITU, Geneva, Switzerland (1996)
4. Romanov, S.E.: Design of DPLC channels and networks (in Russian) (2005).
http://romvchvlcomm.blogspot.com/2007/08/blog-post_8270.html
. Accessed 01 June 2020
5. Jacobson, V.: Compressing TCP/IP headers for low-speed serial links. RFC 1144, IETF (1990)