Update README.md

README.md

@@ -25,3 +25,21 @@ configs:
   - split: test
     path: data/test-*
 ---
+
+## Citation
+If you find SKIPP'D useful to your research, please cite:
+```
+Nie, Y., Li, X., Scott, A., Sun, Y., Venugopal, V., & Brandt, A. (2023). SKIPP’D: A SKy Images and Photovoltaic Power Generation Dataset for short-term solar forecasting. Solar Energy, 255, 171-179.
+```
+or
+```
+@article{nie2023skipp,
+  title={SKIPP’D: A SKy Images and Photovoltaic Power Generation Dataset for short-term solar forecasting},
+  author={Nie, Yuhao and Li, Xiatong and Scott, Andea and Sun, Yuchi and Venugopal, Vignesh and Brandt, Adam},
+  journal={Solar Energy},
+  volume={255},
+  pages={171--179},
+  year={2023},
+  publisher={Elsevier}
+}
+```