Minyar Sassi and Amel Grissa-Touzi, Contribution to the Query Optimization in the Object-Oriented Databases. journal = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology. November 2007, vol. 11(11). 3538 - 3541 [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/13754.