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3. Daily averages of airport climate data from 〈http://www.wunderground.com/history/airport/AAA/YYYY/MM/1/MonthlyHistory.html?format=1〉 where AAA is the IATA airport code for the airport, YYYY is the year, and MM is the month. (accessed 09.19.2012).
4. Use of the reference source method to determine the half-lives of radionuclides of importance in nuclear medicine;da Silva;Appl. Radiat. Isot.,2004
5. People's clothing behaviour according to external weather and indoor environment;De Carli;Build. Environ.,2007