Voutova, N. Filigranological Studi of the Paper of the Earliest Greek Manuscripts Preserved at the Bulgarian National Library (14th c.). София: 1992 с. 54-72,.
Voutova, N. Filigranological Studi of the Paper of the Earliest Greek Manuscripts Preserved at the Bulgarian National Library (14th c.). София: 1992 с. 54-72,.
Voutova, N. (1992) Filigranological Studi of the Paper of the Earliest Greek Manuscripts Preserved at the Bulgarian National Library (14th c.), София: с. 54-72,.
Voutova, N. (1992). Filigranological Studi of the Paper of the Earliest Greek Manuscripts Preserved at the Bulgarian National Library (14th c.). София: с. 54-72.
Voutova N. Filigranological Studi of the Paper of the Earliest Greek Manuscripts Preserved at the Bulgarian National Library (14th c.). София: 1992. p. с. 54-72.
