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Debi Iacovelli; Tim Vasquez (August 1998). Marthin S. Baron (ed.). "Super Typhoon Tip: Shattering all records"(PDF). Mariners Weather Log. 42 (2). Voluntary Observing Ship Project: 4–8. ISSN0025-3367. Archived(PDF) from the original on 2013-11-24. Retrieved 2007-01-25.
National Weather Service Southern Region Headquarters (2010-01-05). "Tropical Cyclone Structure". JetStream - Online School for Weather: Tropical Weather. National Oceanic and Atmospheric Administration. Archived from the original on 2013-12-07. Retrieved 2008-12-28.
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Satellite Services Division (2013). "Typhoon 31W". National Environmental Satellite, Data, and Information Service. Archived from the original on November 11, 2013. Retrieved June 23, 2014.
Debi Iacovelli; Tim Vasquez (August 1998). Marthin S. Baron (ed.). "Super Typhoon Tip: Shattering all records"(PDF). Mariners Weather Log. 42 (2). Voluntary Observing Ship Project: 4–8. ISSN0025-3367. Archived(PDF) from the original on 2013-11-24. Retrieved 2007-01-25.