Princip ventarol
<ul><li>Michal Jenč</li>
<li>Original uploader was <a href="https://cs.wikipedia.org/wiki/User:Danny_d" class="extiw" title="cs:User:Danny d">Danny d</a> at <a class="external text" href="https://cs.wikipedia.org">cs.wikipedia</a></li></ul>
<ul><li>2007-10-13</li>
<li>2007-10-15 (original upload date)</li></ul>
<ul><li>self work</li>
<li>Transferred from <a class="external text" href="https://cs.wikipedia.org">cs.wikipedia</a>; transferred to Commons by <a href="//commons.wikimedia.org/wiki/User:Sevela.p" title="User:Sevela.p">User:Sevela.p</a> using <a rel="nofollow" class="external text" href="http://tools.wikimedia.de/~magnus/commonshelper.php">CommonsHelper</a>.</li></ul>