How many movies have Jiří Knotek and Oldřich Velen collaborated on?

They have worked on 8 movies together! Their first movie together was Lucie (1964) while their highest rated movie together was Příště budeme chytřejší, staroušku! (1982). They have not worked together since Podivná přátelství herce Jesenia (1986). They are most known for their drama films together.