Lead roofing of Cologne cathedral

Radscheit, W. | Engineering Index Backfile | 1956

Terrestrial laser scanning for heritage conservation: the Cologne Cathedral documentation project

D. Pritchard / J. Sperner / S. Hoepner et al. | DOAJ | 2017

Atmospherical deterioration of building stone on the Cologne cathedral and elsewhere

van der Kloes, J.A. | Engineering Index Backfile | 1912

La Place St. Gereon a Cologne

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Quality assessment of replacement stones for the Cologne Cathedral: mineralogical and petrophysical requirements

Graue, B. / Siegesmund, S. / Middendorf, B. | BASE | 2011