• www.jakob-ullmann.com – official website • musikrat.de – biography and project description at German Music Council (in German) • Profile at
Hochschule für Musik Basel • Interview by Georg-Friedrich Kühn (in German) • Gisela Nauck: Der Komponist Jakob Ullmann - ein Portrait - Feature from: Neue Zeitschrift für Musik, 1/ 2002 (in German) • Jakob Ullmann at Edition RZ == References ==