Ghmari, F., and I. Mezni. “Study of the Absorptance of Si-Gratings and of Arrays of SiO2-Filled Trenches on Si-Grating Substrate”. JOURNAL OF ADVANCES IN PHYSICS, vol. 12, no. 2, Aug. 2016, pp. 4278-90, doi:10.24297/jap.v12i2.161.