Supporting Physical Independence in an Object Database Server. - Nicola Aloia; Svetlana Barneva; Fausto Rabitti (ECOOP, 1992)

Physical Independence in Object Databases. - Nicola Aloia; Svetlana Barneva; Fausto Rabitti (Future Databases, 1992)

Navigation Accellerators of PIOS. - Nicola Aloia; Svetlana Barneva; Gianni Mainetto; Fausto Rabitti; Pavel Zezula (SEBD, 1993)

Using continued fractions for efficient subclass checking. - Ronald Morrison; Andrew England; Richard C. H. Connor; Malcolm P. Atkinson 001; Svetlana Barneva; Fausto Rabitti; Pavel Zezula (OOPS Messenger, 1995)