<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<item>
  <id>60011595</id>
  <dt>a</dt>
  <an>60011595</an>
  <augroup>
    <au>Marsden, Jerrold E.</au>
    <au>Ratiu, Tudor S.</au>
  </augroup>
  <ti>Mechanical systems: symmetries and reduction</ti>
  <so>Encyclopedia of Complexity and Systems Science, 5482-5510 (2009).</so>
  <py>2009</py>
  <pu></pu>
  <lagroup>
    <la>EN</la>
  </lagroup>
  <ccgroup>
  </ccgroup>
  <utgroup>
  </utgroup>
  <cigroup>
  </cigroup>
  <ligroup>
    <li>doi:10.1007/978-0-387-30440-3_326</li>
  </ligroup>
</item>