Authors should submit a brief autobiography of 75-100 words along with the paper. Mathematical symbols may be hand-written or typed. Greek letters and unusual signs should be identified separately in the margin. Distinction should be made between letter o and zero, between letter I and number 1 and prime. All abbreviations should be preceded the first time they appear by the full name.
Footnotes are to be kept to an absolute minimum.
Parentheses in the text are preferred. Footnotes are not to be used for bibliographical references. Illustrations Relevant illustrations are welcomed. It is the author's responsibility to provide us with full details about the picture source and to obtain from publishers or other relevant individuals permission to reproduce material and suitable glossy prints of the illustrations concerned. Both drawings and photographs should be clearly identified on the back with the figure number and the author's name.