The final version

• Please do not use any accents (no accents in Information about You and Your Paper, e.g. Grazyna Smiala).
• Please do not use capitalized letters. Titles and names should be written with lower letters except from the first letter which should be in capitals. E.g. The estimation of GARCH models. Clive Granger.
• The abstract should be at most 600 characters with spaces in a single paragraph. The title should be at most 15 words. Plain text should be used and without any accents. The abstract should not list or contain any references (e.g. do not have statements like "... in Robert Engle (1982)").
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