@article {Angelov1989,
	title = {Parallele in den sozial-{\"o}konomischen Verh{\"a}ltnissen der mittelalterlichen balkanischen Staaten},
	journal = {Palaeobulgarica / Старобългаристика},
	volume = {13},
	year = {1989},
	pages = {3{\textendash}13},
	author = {Angelov, Dimit{\^a}r}
}
