@article{Holtzmann, Katepan Boioannes,
address  = {},
author = {Holtzmann, Walther},
journal = {Nachrichten der Akademie der Wissenschaften in Göttingen, phil.-hist. Klasse},
keywords = {Italien; Hochmittelalter; Kirchenorganisation; Politische Geschichte; Holtzmann, Walther (1891-1963)},
pages = {21-39},
title={Der Katepan Boioannes und die kirchliche Organisation der Capitanata},
uniqueid = {111693},
url = {http://opac.regesta-imperii.de/id/111693},
year = {1960}
}