How many movies have Nikolai Smirnov and Sergey Serebrenikov collaborated on?

They have worked on 3 movies together! Their first movie together was Quiet Flows the Don (1957) while their highest rated movie together was Three Poplars on Plyuschikha Street (1968). They have not worked together since Three Poplars on Plyuschikha Street (1968). They are most known for their drama films together.