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American Numismatic Society Museum Notes 10 (1958), pp. 107–12.
Ovannes Ghalpakhtchian and
Adriano Alpago-Novello (1970), Sanahin, Milan: Ares. Manuk-Khaloyan...
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Ghalpakhtchian, G. A. Sarkisian, A. V. Vlasov,
Architektura armenii (Armenian Architecture)...