How many movies have Jan Zach and Vlasta Pospíšilová collaborated on?

They have worked on 3 movies together! Their first movie together was Adventures of Robinson Crusoe, a Sailor from York (1982) while their highest rated movie together was The Pied Piper (1986). They have not worked together since Tisíc a jedna noc (1993). They are most known for their animation films together.