Crack spread: differenze tra le versioni

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==Collegamenti esterni==
*[https://www.seasonalgo.com/crack-spread Seasonalgo]
*[http://www.energyintel.com/pages/about_piw.aspx Petroleum Intelligence Weekly] {{Webarchive|url=https://web.archive.org/web/20170908201448/http://www.energyintel.com/pages/about_piw.aspx |date=8 settembre 2017 }}
*[https://trading-blog.assistenzabrokers.it/?p=15640&preview=true Trading Journal Blog]