Haas, Recurrent passages. — G.G.O. Haas, Recurrent and parallel passages in the principal Upanishads and the Bhagavad-gītā. With references to other sanskrit texts, — JAOS, vol. 42, 1922, pp. 1-43.
Harrison. — M.H. Harrison, Hindu Monism and pluralism as found in the Upanishads and in the philosophies dependent upon them, Oxford, 1932.
Hauschild. — R. Hauschild, Über altbekannte und neuentdeckte metrische Stücke in der Chāndogya-Upaniṣad, — «Die Sprache», VII, 1961, 5. 32–63.
F. Heiller, Die Mystik in den Upanishaden, München, 1925.
Heimann, Studien. — B. Heimann, Studien zur Eigenart indischen Denkens, Tübingen, 1930.
Heimann, Tiefschlaf. — B. Heimann, Die Tiefschlafspekulation der alten Upanishaden, München, 1922.
Hillebrandt, Bemerkungen. — A. Hillebrandt, Weitere Bemerkungen zu den Upaniṣads, — ZDMG, Bd 71, 1917, S. 313–314.
G.A. Jacob, A concordance to the principal Upanishads and Bhagavadgītā, Bombay, 1691.
Johnston, Dramatic. — Ch. Johnston, The dramatic element in the Upanishads, — «The Monist», Chicago, vol. XX, 1910, pp. 185–216.
Keith, Religion. — A.B. Keith, The religion and philosophy of the Veda and Upanishads, Cambridge (Mass.), 1925.
W.Mc. Evilly, Kant, Heidegger and the Upanishads, — «Philosophy East and West», vol. 12, 1963, № 4, pp. 311–317.
Mishra, — V. Mishra, Life in India as revealed in the Chāndogyopaniṣad, — IC, vol. XIII, 1946, pp. 126–134.
Morgenroth, Sprache. — W. Morgenroth, Die Spache der Chāndogya-upaniṣad, — в кн. «История и культура древней Индии», М., 1963, стр. 223–234.
Narahari. Ātman. — H.G. Narahari, Ātman in pre-upaniṣadic vedic literature, 1944.
Oldenberg, Lehre. — H. Oldenberg, Die Lehre der Upanishaden und die Anfänge des Buddhismus, Göttingen, 1923.
Pandit, Upanishads. — M.P. Pandit, The Upanishads. Gateways of knowledge, Madras, 1960.
Przyluski, Influences. — J. Przyluski, Les influences populaires dans la Chāndogya-upaniṣad, — BSOS, vol, V, 1929. pp. 303–306.
Przyluski, Loi. — J. Przyluski, La loi de symétrie dans la Chāndogya-upaniṣad, — BSOS, vol. V, 1929, pp. 489–497.
Radhakrishnan, Philosophy. — S. Radhakrishnan, The philosophy of the Upanishads, London, 1955.
Ranade, Survey. — R.D. Ranade, A constructive survey of Upanishadic philosophy being a systematic introduction to Indian metaphysics, Poona, 1926.
Renou, Passage. — L. Renou, Le passage des Brahmaṇa aux Upaniṣad, — JAOS, vol. 73, 1953, pp. 138–144.
Renou, Remarques. — L. Renou, Remarques sur la Chāndogya-иpaniṣad, — «Etudes védiques et pāninéens», t. I, Paris, 1955, pp. 91-102.
Renou, Separation. — L. Renou, La’separation du préverbe et du verbe en vedique, — BSLP, t. 34, 1933, pp. 49–93.
N. Roerich, Chāndogya Upanishads. — в кн. «Art and thought», London, 1947, pp. 193–196.
Ruben, Debatten. — W. Ruben, Über die Debatten in den alten Upaniṣad’s, — ZDMG, NF, Bd 8. 1929. S. 238–255.
Ruben, Philosophen. — W. Ruben, Die Philosophen der Upanishaden, Bern, 1947.
Ruben, Uddalaka. — W. Ruben, Uddalaka and ’. Materialism and idealism, — «Indian studies. Past aid present», vol. III, 1962, pp. 345–354.
Schayer. — S. Schayer, Über die Bedeutung des Wortes Upaniṣad, — «Rocznik Orientalistyczny», t. III, (1925), 1927, str. 57–67.
Sen Gupta, The Meanings. — A. Sen Gupta, The meanings of «That thou art», — «Philosophy East aid West», vol. 12, 1962, № 2, pp. 125–134.
Senart, Théorie. — E. Senart, La théorie des Cunas et la Chāndogya Upaniṣad, — «Etudes Asiatiques», t. II, 1925, pp. 285–292.