Footnotes to the text should be avoided. Figures are to be numbered consecutively. For direct reproduction, lettered ink drawings are required. Computer printouts are accepted, provided they are black enough. Tables are to be numbered separately from the illustrations and each table should have a title.
Formulas are to be typewritten whenever possible.
Special signs are to be marked in colour. Formulas should be numbered consecutively on the right-hand side of the page. The list of references should include only publications cited in the text. The references should be listed in alphabetical order under the first author's name. Citations in the text should be by author and year.