@conference {434,
	title = {A Temporal Extension for Multidimensional Object Oriented Conceptual Model},
	booktitle = {The Annual  International Conference on Statistics/Computer Science /Operation Research, ISSR},
	year = {2004},
	address = {cairo},
	author = {Yehia K. Helmy and Ali H. El-Bastawisy and Laila M. El Fangry and Marwa Salah Farhan}
}
