It is listed in several movie databases and has been reviewed by the New York Times.

MovieWeb's listing of films is searchable by title or studio, though it has less entries than movie databases.

Open Media DataBase, the free movie database that anyone can edit.

Page on the film (Internet Movie Database)

Seclusion Near a Forest at the Czechoslovak movie database (in Czech)

Aside from movie databases, which he uses to check quotations from films, Mr. Kaplan said he relied mostly on printed sources.

Movie Database, Filming locations, ibid.

Rainbow on the Chinese Movie Database (listed under the title Fly My Heart)

"Internet Movie Database for Peter Barnes"

The Internet Movie Database.