@article{article07707a50,
title   = {Thermal stabilisation of alumina by lanthanide ions},
author = {Braun, S. and Appel, L. G. and Zinner, Lea Barbieri and Schmal, M.},
year = {1999},
doi = {10.1179/096797899680273},
journal   = {British Ceramic Transactions}
}