Temperature stable low loss ceramic dielectrics in (1-x)ZnAl $\mathsf{_{2}}$ O $\mathsf{_{4}}$ -xTiO $\mathsf{_{2}}$ system for microwave substrate applications - Surendran, K. P.; Santha, N.; Mohanan, P.; Sebastian, M. T. (Springer, 2004)
http://dx.doi.org/10.1140/epjb/e2004-00321-8
Keywords: U