Babaei, Reza, Shokoofe Goli‑Haghighi, and Hadi Savaloni. 2023. “Detection of Overtone and Combined Peaks Using Mn Cu Helical Star-Shaped (pine-Tree-Like) Sculptured Thin Films in Surface-Enhanced Raman Spectroscopy”. Journal of Theoretical and Applied Physics 13 (4). https://doi.org/10.1007/s40094-019-00348-2.