_. Benveniste, Emile. The Persian Religion according to the Chief Greek Texts. Paris, 1929.
_. Bianchi, Ugo. Zaman i Ohrmazd: Lo zoroastrismo nelle sue origini e nella sua essenza. Turin, 1958.
_. Boyce, Mary. A History of Zoroastrianism, vol. 2. Leiden, 1982.
_. Christensen, Arthur. L'Iran sous les Sassanides. 2d ed. Copenhagen, 1944.
_. Duchesne-Guillemin, Jacques. "Notes on Zervanism in the Light of Zaehner's Zurvan, with A additional Reference." Journal of Near Eastern Studies 15 (1956): 106-112.
_. Frye, Richard N. "Zurvanism Again. "Harvard Theological Review 52 (April 1959): 63-73.
_. Gnoli, Cherardo. "L'evolution du dualisme iranian et le probleme zurvanite. "Revue de l'Histoire des Religions 201 (1984): 115-138.
_. Junker, Heinrich F. Uber iranische Quellen der hellenistischen Aion - Vorstellung. Leipzig, 1923.
_. Mole, Marijan. "Le probleme zurvanite". Journal asiatique 247 (1959): 431-469.
_. Nyberg, H. S. "Questions de cosmogonie et de cosmologie mazdeennes." Journal asiatique 214 (1929): 193-310 and 219 (1931): 1-134, 193-244.
_. Schaeder, H. H. "Der iranische Zertgott und sein Mythos." Zeitschriftder Deutschen Morgenlandischen Gesellschaft 95 (1941): 268-299.
_. Scheftelowitz, J. Die Zeit als Schicksalsgottheit in der indischen und iranischen Religion. Stuttgart, 1929.
_. Widengren, Geo. Die Religionen Irans. Stuttgart, 1965. Translated as Les religions de l'Iran (Paris, 1968).
_. Zaehner, R. C. Zurvan: A Zoroastrian Dilemma. Oxford, 1955.
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