„… . After removal of the crust, a softer material layer is suddenly exposed to weathering influences …” „… building blocks, and interventions which require (temporarily) removal of stones from their position …” „… integrity of the masonry. Techniques which require the temporarily removal or replacement of stones …”

„… removal of influential observations or the defini-tion of the eligible data set (see BRUNS and KALTHAUS …” „… , loss functions, and type-II-errors are an integral part of the statistical testing ap-proach based on …” „… econometrics and statistics. The sur-vey was not meant to be the basis for a rigorous em-pirical analysis for …”