Alvaro A. A. Fernandes Maria L. Barja Norman W. Paton M. Howard Williams Andrew Dinn Imara P. Diaz Alia I. Abdelmoty ROCK & ROLL: A Deductive Object-Oriented Database System. 25-32 1994 DAISD db/conf/daisd/daisd94.html#FernandesBPWDDA94