XPath の属性値に基づいてノードをフィルタリングする方法

<?xml version="1.0" encoding="UTF-8"?>
<xml>
  <events date="12/12/2010">
    <event>
      <title>JqueryEvent</title>
      <description>
        easily
      </description>
    </event>
  </events>
  <events date="14/12/2011">
    <event>
      <title>automatically onBlur</title>
      <description>
        when a date is selected. For an inline calendar, simply attach the datepicker to a div or span.
      </description>
    </event>
  </events>
</xml>

//xml/events[@date="14/12/2011"]