sentences:  There has also been widespread controversy over his book "The City of Light" (1997), which Selbourne has claimed to be a translation of an account of a trading voyage to China by a thirteenth-century merchant, Jacob of Ancona.Doubted by some Western Sinologists, but its authenticity attested by some leading Chinese scholars, it has passed through many subsequent editions, and has been translated in turn into Chinese and some dozen other languages.Thus far, Selbourne has refused to give further details about its provenance, and has not replied to allegations that he is its author.