His publications include Correspondence spirituelle echangee entre Nuroddin Esfarayeni (ob. 717/1317) et son disciple 'Ala'oddawleh Semnani (ob. 736/1336) (1972), Nuruddin Abdurrahman Isfarayini: Le R vlateur des mysteres (1980; 2nd ed. 1986; 3rd ed. 2005),the edition of Henry Corbin's Cyclical Time and Ismaili Gnosis (Kegan Paul International and Islamic Publications Ltd., 1983, as well as numerous articles in various languages including a selection republished as Recherches en spiritualité iranienne (2006).
He is preparing a book on the ishraqi philosopher Suhrawardi, and several other publications including a new edition and translation of the Ismaili thinker Sijistani's Kashf al-mahjub and contributions to the forthcoming Grundriss der Geschichte der Philosophi:. Philosophie in der Islamischen Welt.