How many movies have Bogomil Raynov and Iossif Surchadzhiev collaborated on?

They have worked on 3 movies together! Their first movie together was Requiem for a Slut (1976) while their highest rated movie together was Typhoons with Gentle Names (1979). They have not worked together since Typhoons with Gentle Names (1979). They are most known for their crime films together.