How many movies have Boris Stepanov and Geliy Ryabov collaborated on?

They have worked on 3 movies together! Their first movie together was State Border: Vol. 1. We are Ours, We are New... (1980) while their highest rated movie together was State Border: Vol. 4. Red Sand (1984). They have not worked together since State Border: Vol. 4. Red Sand (1984). They are most known for their drama films together.