@proceedings {2755,
	title = {Hydrodynamical characterization of a heterogeneous aquifer system under semi-arid climate Example of the plain of  T{\'e}bessa },
	journal = {The First international symposium of the petroleum and geological resources in the tethys realm. Cairo, Egypt},
	year = {2009},
	author = {Drias Tarek and Toubal Ahmed Ch{\'e}rif}
}
