http://www.page88.co.za/cr/seasonal/seasonal-patterns.shtml
http://www.seasonalcharts.com/
http://www.spectrumcommodities.com/education/commodity/charts/
http://www.cobrasmarketview.com/seasonality-by-month-and-day/
http://www.cobrasmarketview.com/holiday-seasonality/
http://www.signalfinancialgroup.com/seasonal/seasonaloverview.php
http://blog.stocktradersalmanac.com/
miesiące
Decenial patern
