The movie is not among my favourites, though it is altogether a remarkable one. Here you will find some description:
http://www.dostavka-dvd-video.ru/comment/716/1/
It was shot in 1988, at the dusk of Perestroyka. To my mind, as for the characters, the movie is even better than the book. Unfortunately, I don't have it at home. It is certainly worth seeing.