add cite info

Signed-off-by: sunfishfly <sunhuaifeng@sdu.edu.cn>

README.md

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 This project provides a Python-based workflow for processing ground-penetrating radar (GPR) data from SEG-Y files, performing FK migration, and exporting the results as 3D point cloud data. It includes steps for data correction, background subtraction, tapering, migration, Hilbert envelope computation, and visualization.
 
+# Cite this work
+Junkai Ge, Huaifeng Sun, Xiaodong Li, Xushan Lu, Xuening Wang, Li Li, Kejia Hu, Decoding the stone Buddha: Three-dimensional ground penetrating radar attribute insights into cracks and restoration history of Sumeru throne, Journal of Cultural Heritage, Volume 76, November–December 2025, Pages 39-51
+
+See the published paper at
+https://www.sciencedirect.com/science/article/pii/S1296207425001980 
+
 ## 🌍 Key Features
 
 - Read and process SEG-Y GPR data using `segyio`