@article {Gjuzelev2003,
	title = {Bulgaren und Deutsche im Zeitalter der Ottonen (919{\textendash}1024)},
	journal = {Palaeobulgarica / Старобългаристика},
	volume = {27},
	year = {2003},
	pages = {3{\textendash}10},
	author = {Gjuzelev, Vassil}
}
