Manuscripts are written in English. They have to be typewritten on one side of A4 standard paper, double-spaced with 3 cm margins and submitted in triplicate (one original and two copies). After the manuscript has been accepted for publication, the authors will not be permitted to make any additions.

Manuscript pages should be presented in the following order: (i) Title, (ii) Abstract, (iii) Body of the paper, (iv) conclusions, (v) references and footnotes (combined), (vi) figures and tables captions, (vii) figures and (viii) tables. All pages should be numbered.