@conferenceObjectPart{NackenHoebbelSchmidt_1999,
title={Formation and hydrolytic stability of oxygen bridged heterometal bonds (Si-O-Ti, Si-O-Zr, Si-O-Ta) in sol-gel materials},
author={Nacken, Manfred and Hoebbel, Dagobert and Schmidt, Helmut K.},
isbn={1-558-99483-1},
doi={http://dx.doi.org/10.22028/D291-24629},
year={1999}
}