Type tables and short figure legends double-spaced on separate sheets, and number them accordingly. Indicate in the paper where to include them. Photographs that would be suitable for a cover illustration are also welcome. References cited should be typed alphabetically on a separate sheet. Only published or papers in press can be cited, but their number is limited.
SI units are standard for the abbreviations.
Acknowledgements must be brief and references to grants omitted. One feature article and a maximum of two science reports will be carried in each issue.