@conferenceObjectPart{SchmidtPopall_1990,
title={Inorganic-organic composites (ORMOCERs) for optical application},
author={Schmidt, Helmut K. and Popall, Michael},
isbn={0-8194-0389-X},
doi={http://dx.doi.org/10.22028/D291-24395},
year={1990}
}