James Mallinson, "The Dattatreyayogasastra" (Ecole française d'Extrême-Orient, 2024)

This book introduces, edits and translates the Dattātreyayogaśātra, a Sanskrit text on yoga composed in about 1200 CE in South India. It teaches four types of yoga practice but devotes the majority of its 193 verses to haṭhayoga, which it divides into two varieties, one which consists of the eight auxiliaries first taught by Patañjali and one which has nine physical methods. It is thus the first text to combine the aṣṭāṅga system of Patañjali with physical techniques, and its teachings were highly influential on later authors and commentators of yoga texts. The book is addressed primarily to scholars but will also be of interest to students and practitioners of yoga.