Symbols and abbreviations must be defined in the text at their first occurrence. Greek letters in equations should be marked clearly the first time they occur. The responsibility for the accuracy of references rests with the author. Reference only those works that are absolutely necessary. Collective reference to older publications can often be made by citing references in which those publications are listed.
References are to be numbered sequentially in the order in which they are cited in the text.
The numbers should appear in square brackets. The style is as in the following examples. Journal titles are to be abbreviated following the style of Chemical Abstracts. Then give the names, with academic titles, of all authors along with complete postal addresses.