It helps if displayed equations or statements which will be quoted later are numbered in order on the right of their line. There is no need to underline Greek or script letters provided these are clearly typed. Any special symbols should be explained on a separate sheet of directions for the printer. Footnotes should be avoided. Diagrams Figures and drawings should be on separate sheets in black ink or produced by computer to comparable quality.
Photocopies are acceptable only if they are as clear as the original.
Symbols, legends and captions should be given on a transparent overlay . The author's name in pencil must be on all separate sheets of diagrams. Figures should be used sparingly and only when they greatly clarify the exposition. Indicate the position of each in the text as for figures. References References should be collected at the end of the paper numbered in alphabetical order of the author's names.