@article{article899acb7a,
title   = {Photoluminescence of layered niobates intercalated with 'Eu POT. 3+' ion},
author = {Constantino, Vera Regina Leopoldo and Bizeto, M A and Brito, Hermi Felinto de},
year = {1998},
journal   = {Journal of Alloys and Compounds}
}