@article{articlee1f1defc,
title   = {Complexes of lanthanide trifluoroacetates and n, n, n', N'- tetramethylurea (tmu)},
author = {Silva, L P O and Zinner, Klaus and Zinner, Lea Barbieri},
year = {1994},
journal   = {Anais da Associacao Brasileira de Quimica}
}