Shibakong lun; 1 fasc.; the Treatise on the Eighteen Emptinesses， T 1616.31.861-7. A commentary on Vasubandhu's Treatise on Discriminating the Middle and the Extremes 中边分别论， translated by Parama^rtha 真谛， the authorship of which is uncertain. Explain such categories as the eighteen kinds of emptiness 十八空 the seven kinds of suchness 七种真如， etc.