@conferenceObjectPart{FuchsPopallRömichSchmidt_1989, title={Preservation of stained glass windows : new materials and techniques}, author={Fuchs, Dieter R. and Popall, Michael and Römich, Hannelore and Schmidt, Helmut K.}, isbn={0-7506-0237-6}, doi={http://dx.doi.org/10.22028/D291-24365}, year={1989} }