@Inproceedings{RodríguezBrisaboa95,
author = {Brisaboa, N. R. and Hernandez, H. J.},
title = {Testing Bag-Containment of Conjuctive Queries},
booktitle = {Memoria del 2º Congreso Internacional de Investigación en Ciencias Computacionales (CIICC'95)},
address = {Zapatepec},
year = {1995},
pages = {105-107}
}