Such a situation of non-normality of returns is a very common case for assets traded on the stock market. By analyzing Figure 1 and Figure 2, we can state that neither oil-exporting nor oil-importing countries’ exchange rates share the same pattern. However, as concerns oil-exporting ...
This is evidenced, for example, by a decrease in the concentration of heavy metals in aerosol fallout in the direction from south to north, despite the fact that the number of oil and gas enterprises, as the main pollutant of the swamps of Western Siberia, is increasing in this direction ...