Girkʻ grotsʻKhechʻumyan, VigenGevorgyan, A. B.Muradyan, N. H.ArmenianBook1978Erevan : "Sovetakan Grogh" Hratarakchʻutʻyun, 1978.Paleography, ArmenianWriting, Armenian—HistoryIllumination of books and manuscripts, ArmenianBook