Chattopadhyaya, Sudhakar. The evolution of theistic sects in ancient India, up to the time of Śaṃkarācārya. - Calcutta, Progressive Publishers, 1962. - 205 p. 22 cm. LCCN: sa 63002433 Subjects--Topical Terms: Hindu sects. LC Class. No.: BL1245.A1 / C5