1. Warthman, F. (2003, Mar.). Delay-tolerant networks (DTNs): a tutorial v1.1.
http://www.dtnrg.org/docs/tutorials/warthman-1.1.pdf
. Accessed 08 Oct. 2012.
2. Huffaker, B., Fomenkov, M., Plummer, D., Moore, D., & Claffy, K. (2002). Distance metrics in the Internet. In IEEE international telecommunications symposium (ITS), Sep. 2002 (pp. 200–202). Brazil: IEEE Press.
3. Cerf, V. G. (2008). An interplanetary internet. Space Operations Communicator, 5(4).
4. Mars science laboratory: data rates/returns.
http://mars.jpl.nasa.gov/msl/mission/communicationwithearth/data/
. Accessed 08 Oct. 2012.
5. Underwater acoustic modem models.
http://www.link-quest.com/html/models1.htm
. Accessed 08 Oct. 2012.