How many movies have Aristarkh Livanov and Geliy Ryabov collaborated on?

They have worked on 2 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. 3. Eastern Frontier (1982). They have not worked together since State Border: Vol. 3. Eastern Frontier (1982).