Basics
Imported print text
                              Ian Whicher, "Moving towards a non-dualistic interpretation of Yoga: th integration of spirit (puruṣa) and matter (prakṛti) in the yogasūtras", CCIIS 46-65
Imported raw data
                              131.1.342 Ian Whicher, "Moving towards a non-dualistic interpretation of Yoga: th integration of spirit (puruṣa) and matter (prakṛti) in the yogasūtras", CCIIS 46-65
References
Source refers to  (1)