AL-Assadi, Z.I. and AL-Assadi, F.I. 2021. Enhancing the aesthetic aspect of the solar systems used as facades for building by designing multi-layer optical coatings. Technium: Romanian Journal of Applied Sciences and Technology. 3, 11 (Dec. 2021), 1–10. DOI:https://doi.org/10.47577/technium.v3i11.5324.