ES-Salhi, E, and A Toumanari. “Devonshire-Ginzburg-Landau Phenomenological Study of Ferroelectric Properties of PbTiO3 Thin Films”. International Journal of Computer Sciences and Engineering, vol. 9, no. 11, Nov. 2021, pp. 6-9, doi:10.26438/ijcse/v9i11.69.