1. Kitagawa G (2010) Introduction to time series modeling. Chapman & Hall/CRC Press, Boca Raton; Taylor & Francis Group, Abingdon, pp 6–8
2. NOOA (2016) National Oceanic and Atmospheric Administration.
http://www.esrl.noaa.gov/
. Visited 01 Aug 2016
3. TSDL (2016) Time Series Data Library.
https://datamarket.com/data/list/
. Visited 01 Aug 2016
4. EIA (2016) Energy Information Administration.
https://www.eia.gov/tools/models/timeseries.cfm/
. Visited 01 Aug 2016
5. TWB (2016) The World Bank Open Data.
http://databank.worldbank.org/data/home.aspx/
. Visited 01 Aug 2016