Mathematical and chemical symbols, equations and formulae should be typed. Tables should be submitted on separate sheets and numbered consecutively throughout. Figures should also be submitted on separate sheets. The captions should be presented together on separate sheets. Colour figures can be included in the electronic version free of charge, these will however appear in black and white in the print edition.
Line drawings are preferable to photographs.
Photocopies are not suitable for reproduction. Inscriptions should be clearly legible. Illustrations prepared in digital form must be in accordance with the technical instruction for manuscripts and illustrations in electronic form that is published in this journal. Extended tables, colour figures, 3-d data sets, molecular structures, video clips, multimedia, audio recordings, etc. can be distributed as Supplementary Material accessible over the World Wide Web. In order to make the manuscript preparation easier for you and help us with the production process we created word-templates.