How many movies have Jaroslav Lehman and Zdeněk Srstka collaborated on?

They have worked on 9 movies together! Their first movie together was Days of Betrayal (1973) while their highest rated movie together was Příště budeme chytřejší, staroušku! (1982). They have not worked together since How Poets Are Losing Their Illusions (1985). They are most known for their drama films together.