Consider the following statement about Ravana from wikipedia:
Ravana is also depicted as the author of the Ravana Samhita, a book on Hindu astrology and book Arka Prakasham; book on Siddha medicine and treatment . Ravana possessed a thorough knowledge of Siddha and political science. He is said to have possessed the nectar of immortality, which was stored inside his belly, thanks to a celestial boon by Brahma.
It is clearly saying that Ravana wrote two books: Ravana Samhita, a book on Hindu astrology and Arka Prakasham, book on Siddha medicine and treatment.
Is it true that Ravana is author of those two books or any other books?