<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<item>
  <id>70832751</id>
  <dt>a</dt>
  <an>70832751</an>
  <augroup>
    <au>Staudt, Martin</au>
    <au>Jarke, Matthias</au>
    <au>Jeusfeld, Manfred A.</au>
    <au>Nissen, Hans W.</au>
  </augroup>
  <ti>Query classes</ti>
  <so>DOOD, 283-295 (1993).</so>
  <py>1993</py>
  <pu></pu>
  <lagroup>
    <la>EN</la>
  </lagroup>
  <ccgroup>
  </ccgroup>
  <utgroup>
  </utgroup>
  <cigroup>
  </cigroup>
  <ligroup>
    <li>doi:10.1007/3-540-57530-8_18</li>
  </ligroup>
</item>