Upanishads | Article about Upanishads by The Free Dictionary
Upanishads: The Principal Upanishads. Edited with introduction, text, translation, and notes by S. Radhakrishnan. London, 1953. In Russian translation: Brikhadaran’iaka Upanishada. Foreword and commentary by A. Ia. Syrkin. Moscow, 1964.