1. Bekkadal F. D4.1–Maritime Communication Technology. MarCom project internal report.
2. FCC. Second report and order and memorandum opinion and order. In: FCC 08-260; November 2008.
3. 〈http://www.dvb.org/〉.
4. 〈http://www.eustis.army.mil/WEATHER/Weather Products/seastate.htm〉.
5. 〈http://hyperphysics.phy-astr.gsu.edu/hbase/waves/watwav2.html〉.