@inproceedings{inproceedings89c63233,
title   = {Tetramethylurea adducts of biscyclopentadienyl complexes of 'SM' (ii) and 'YB' (ii)},
author = {Silva-Valenzuela, M G and Vicentini, Geraldo and Zinner, Lea Barbieri and Marques, Nélson and Matos, A P},
year = {1993},
publisher = {Universidad de Santiago de Compostella},
booktitle   = {Latin-American Inorganic Chemistry Meeting}
}