How many movies have Boris Travkin and L. Danilevich collaborated on?

They have worked on 4 movies together! Their first movie together was Геометрия для малышей. След, который оставила точка (1982) and was their highest rated movie together. They have not worked together since Загадки звёздного неба: Откуда взялись телескопы (1985). They are most known for their family films together.