@article {Pljakov1988,
	title = {La r{\'e}gion de la Moyenne Struma durant le Moyen {\^a}ge bulgare},
	journal = {Palaeobulgarica / Старобългаристика},
	volume = {12},
	year = {1988},
	pages = {101{\textendash}114},
	author = {Pljakov, Zdravko}
}
