@Incollection{Lorentzos00,
author = {Lorentzos, N. A. and Viqueira, J. R. and Tryfona, N.},
title = {Quantum-Based Extension to the Relational Model},
booktitle = {Advances in Informatics},
publisher = { World Scientific},
address = {Londres},
year = {2000},
pages = {188-199}
}