Assembling of <a href="https://en.wikipedia.org/wiki/Hopt_link" class="extiw" title="w:Hopt link">Hopt link</a>.
Exhibit made by Estes Objethos Atelier, video by <a href="//commons.wikimedia.org/wiki/User:Rodrigo.Argenton" title="User:Rodrigo.Argenton">Rodrigo Tetsuo Argenton</a>
Matemateca (IME/USP), provided via digitalization project by the user:<a href="//commons.wikimedia.org/wiki/User:Rodrigo.Argenton" title="User:Rodrigo.Argenton">Rodrigo Tetsuo Argenton</a>