@inproceedings{inproceedingsf4a992aa,
title   = {Luminescent hourglass inclusion (LHI). Europium coordination compounds trapped in 'K IND.2'S'O IND.4' crystal},
author = {Serra, Osvaldo Antônio and Nassar, Eduardo José and Kodaira, C A and Neri, C R and Calefi, Paulo Sérgio and Rosa, Ieda Lúcia Viana},
year = {1997},
booktitle   = {International School on Excited States of Transition Elements}
}