1. Salomon D (2007) Data compression the complete reference, 4th edn. Springer, London. ISBN 1846286026
2. Sun L et al (2013) Guide to voice and video over IP for fixed and mobile networks, computer communications and networks. Springer, London.
https://doi.org/10.1007/978-1-4471-4905-7_2
3. ITU-T (1988) Pulse code modulation (PCM) of voice frequencies. ITU-T G.711
4. Forouzan BA (2007) Data communications and networking, 4th edn. McGraw-Hill, NewYork. ISBN 0072967757
5. Cormen TH, Leiserson CE, Rivest RL, Stein C (2001) Introduction to algorithms, 2nd edn. MIT Press and McGraw-Hill (ISBN: 0-262-03293-7)