@article{WiebckeEmmerFelscheHoebbelEngelhardt_1994,
title={[TMPA]4[Si8O20] . 34H2O and [DDBO]4[Si8O20] . 32H2O are heteronetwork clathrates with 1,1,4,4-tetramethylpiperazinium (TMPA) and 1,4-dimethyl-1,4-diazoniabicyclo[2.2.2]octane (DDBO) guest cations},
author={Wiebcke, Michael and Emmer, Jörg and Felsche, Jürgen and Hoebbel, Dagobert and Engelhardt, Günter},
doi={http://dx.doi.org/10.22028/D291-23953},
year={1994}
}