How many movies have Hartmut Behrsing and Manfred Mosblech collaborated on?

They have worked on 4 movies together! Their first movie together was Rotfuchs (1973) while their highest rated movie together was Marta, Marta (1979). They have not worked together since Berühmte Ärzte der Charité: Der Mann aus Jena (1981). They are most known for their drama films together.