den Hartog, E., Beuckers, K. - G., & Hopp, C..  (2024).  The relationship between Meuse-valley and Rhenish architecture. Arnold of Wied?s epochal buildings in Maastricht and Schwarzrheindorf. In Die kölnisch-niederrheinische Spätromanik. Neue Aspekte eines Forschungsfeldes hochmittelalterlicher Architektur (pp. 221-231). Köln: Böhlau.

Beuckers, K. - G.  (2020).  The Abbey Church of St Gertrude in Nivelles: Observations regarding its Architectural Disposition. In J. F.  Hamburger & Schlotheuber, E. (Red.), The Liber ordinarius of Nivelles (Houghton Library, MSLat 422). Liturgy as Interdisciplinary Intersection (Vol. 111, pp. 279-312). Tübingen: Mohr Siebeck.