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<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><span class="citation web"><a rel="nofollow" class="external text" href="http://www.zamperla.com/en/product/158/disk-o.html?category_id=7">"Zamperla – Disk'O"</a>. Zamperla<span class="reference-accessdate">. Retrieved 19 May 2011</span>.</span><span title=