How to Code Author-Year System.

If you want to use this system you have to specify in 100 the option 101, like:
verbatim140#
Write your citations in the text explicitly except for the year, leaving that up to LATEX<#454#><#454#> with the 102 command. Then give only the appropriate year as the optional argument (i.e. the label in square brackets) with the 103 command(s).
<#455#>Sample Input<#455#>
verbatim141#
The above input produces the citation: ``... refined version of Clarke and Ekeland (1982); the minimality...''. Then the 104 entry of the 105 environment should read:
verbatim142#
<#460#>Sample Output<#460#>