@conferenceObjectPart{MennigGroßLangSohlingSchmidt_1999,
title={Low phonon concentration lasing glasses for 1.3 µm amplification},
author={Mennig, Martin and Groß, Frank and Lang, Ingo and Sohling, Ulrich and Schmidt, Helmut K.},
isbn={1-558-99467-X},
doi={http://dx.doi.org/10.22028/D291-24627},
year={1999}
}