Kumara tantra is attributed to King Ravana of Lanka, the abductor of Sita. Hence, this work is considered to be ancient. Keeping aside its ancientness, there are other works said to have been authored by Ravana, the King of Demons. Well known work in Ayurveda is Arka prakasa. All the works of Ravana were published as on e volume under the name of Ravana Samhita. The works included in this volume were Graha Rasyadi Phaladesa, Rasi naksatradi phaladesa, Uddisa ...
