@article{article4873066b,
title   = {Synthesis , properties and structure of 'GAMMA'-valerolactam lanthanide},
author = {Carvalho, Lilian Rothschild Franco de and Zinner, Lea Barbieri and Vicentini, Geraldo and Bombieri, G and Benetollo, F},
year = {1992},
journal   = {Inorganica Chimica Acta}
}