Herman Rosenblat's Angel at the Fence: The True Story of a Love that Survived, tells how he met his future wife as a girl when she threw apples over the wire fence of the death camp where he was held.

Mr Rosenblat, who now lives in Miami, said he met Rona Radzicki while he was a teenage boy in Schlieben, a sub-division of Buchenwald concentration camp.

However, Holocaust scholars doubted the story and it was exposed by the New Republic magazine. Ben Helfgott, a former Schlieben inmate, said the story was "simply an invention".

The book was due to be published in February. But the date was cancelled when the publishers said it had received new information from the author's agent.

A film based on it, The Flower of the Fence, was due to start shooting in March, but producer Harris Solomon said it will go ahead.