When the circus caravan arrives at an French town, and they see a poster announcing «Gelsomina y Zampanò», the heroes of Federico Fellini's's film, they get their caravans moving away.
The poster advertising «Gelsomina y Zampanò» states their show begins at "8 1/2" - which is also the name of the most recent Fellini film before Yoyo was released in 1965.