Laid, HAMMICHE, Université de Bejaia
Lakhdar, Djoudi, Laboratory of Magnetic Materials, Faculty of Sciences, University of  Djillali Liabes,  Sidi- Bel- Abbes, 22000
Lakhdari, Fouad, Research Unit in Optics and Photonics (UROP), Centre for Development of Advanced Technologies (CDTA), University of Setif 1, Setif, Algeria
LAKMINE, Farid Farid, physic department
LAMARA, Ismail, Physics and Chemistry of Materials Laboratory, Department of Physics, University of M’sila, M’sila 28000, Algeria

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