Please also supply phone and fax numbers, as well as your e-mail address. The reader should be able to follow the methods by which the results were obtained, but there is no need of detailed descriptions unless of a genuine innovation. The results should be described precisely and must be separated from discussion. The discussion should be confined to the interpretation of the results and should not consist of a repetition of them. When essential, they are numbered consecutively and typed at the foot of the appropriate page.
Tables require a heading and figures a legend, also prepared on a separate sheet.
Due to technical reasons, figures with a screen background should not be submitted. On the back of each illustration, indicate its number, the author's name, and 'top' with a soft pencil. Color illustrations are reproduced at the author's expense. The list of references should include only those publications which are cited in the text. The surnames of the authors followed by initials should be given.